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Anime & Manga
- Seven Dragon Balls.
- Seven Rainbow Crystals in the Sailor Moon anime.
- Seven Celestial Warriors in Fushigi Yuugi.
- Seven Shichibukai in One Piece. There were also seven Straw Hat Pirates for a considerable length of time (then they gained more crew members).
- Seven Swordsmen of the Mist. Also, the ninja academy graduates each year are assigned to numbered squads. Guess which squad the main character ended up in.
- The chapter where Hinata finally sincerely confesses her love to Naruto is Chapter 437 (4+3=7). The manga itself ends with the epilogue in Chapter 700, where Naruto is the Seventh Hokage and is Happily Married to Hinata. Their romance unfolds during the seventh Shippuden movie, The Last: Naruto the Movie. Also counts as Lucky Seven.
- Nana uses this rather prominently: both of the main characters are named Nana (a Japanese reading for the number 7), and they share an apartment numbered 707. Subverted in that neither of the two main characters' names use the kanji for 7.
- The Sexy Seven from Claymore.
- Diamond Cut Diamond's story starts off Seven Years after the in-universe show Esper Shounen was cancelled.
- Fairy Tail:
- All the dragons (except, apparently, the jerkass black dragon) disappeared seven years ago. On July Seventh of the year 777. Seven years later, Black Mage Zeref decides to end his exile, and the dragon Acnologia appears and assault the strongest member of Fairy Tail on Tenrou Island, who disappear for seven years. And then after the Grand Magic Games, Future Rogue brings seven dragons from the past, and seven Dragonslayer mages fight them. The final battle with the aforementioned jerkass black dragon involves seven Dragon Slayers fighting him.
- Regarding the Grand Magic Games, after the disqualification of Raven Tail, seven teams participated until both Fairy Tail teams are combined into one in the second-to-last day. On the other hand, the eight teams were participating for seven different guilds.
- Shuya Nanahara from Battle Royale, with the "Nana" in his last name meaning seven. Used to be nicknamed "Wild 7" when he played baseball, which is also the brand of cigarettes Shogo Kawada smokes.
- Seven types of Dying Will Flames. Because of this, all important groups of people also come in sets of seven.
- Yu-Gi-Oh! GX has Johan's Crystal Beast monster spirits; when all 7 are gathered he can summon his ace monster Rainbow Dragon. (Its evil twin Rainbow Dark Dragon works in a similar fashion).
- Pokémon: Jirachi: Wishmaker: Wishing Star of the Seven Nights.
- Saint Seiya has seven Odin Saints (each guarding one of the seven Sapphire Stones), as well as seven Marine Saints.
- YuYu Hakusho has the anti-villainous seven espers, the seventh of which has seven personalities.
- Nausicaä of the Valley of the Wind takes place 1000 years after the world was nearly destroyed by the God-Soldiers in the "Seven Days of Fire".
- Though not all were revealed, both the 777 Tools of Demon World (which also uses the Rule of Three) and the 7 Weapons of the Demon Emperor from Majin Tantei Nougami Neuro.
- In Magical Girl Lyrical Nanoha StrikerS, seven of twelve Numbers make a Heel–Face Turn. Ironically, Sette, the number VII among them, doesn't.
- Father from Fullmetal Alchemist has seven Homunculi as his children. They are based of the Seven Deadly Sins.
- The Seven Stakes of Purgatory from Umineko: When They Cry are also based of the Seven Deadly Sins.
- The titular witches of Yamada-kun and the Seven Witches. Except that there have always been at least two separate groups of seven witches, making it fourteen, but still, the seven part counts for the first party of the story.
- In Monster Rancher, the Searchers, the heroes seeking the Phoenix, were a group of seven.
- In Digimon Adventure, there were originally seven Digidestined=/=Chosen Children, then they gained a Sixth Ranger.
- In Made In Abyss, the titular Abyss is divided in seven layers, each more twisted and dangerous than the last.
- As a direct consequence to "Snow White and the Seven Dwarfs", seven Leafe Knights in Prétear
- DC's Seven Soldiers of Victory, both in the Golden Age and in the anthology series by Grant Morrison.
- In Seven Soldiers #0, a team is assembled with only six members because one didn't show up. Dan the Dyno-mite remarks that the significance of the number 7 can't be overstated, especially since 6 is extremely unlucky in comparison. Then they all die.
- Justice League of America:
- The League's seven founding members: Superman, Batman, Wonder Woman, Green Lantern, The Flash, Aquaman and the Martian Manhunter. The League's roster has changed a lot over the years, but these guys were the first, and are thus considered the "Big Seven" for the DCU as a whole.
- In Grant Morrison's JLA, the original seven are reunited, except with Legacy Characters for the then-dead Green Lantern and Flash.
- In the New 52, Cyborg is now a founding member rather than the Martian Manhunter, but the number is still seven.
- Grant Morrison also did a story arc titled "Synchronicity," where various occurrences resulting from a probability-altering machine including seven separate villains attacking Washington DC simultaneously to Martian Manhunter calling in the Atom because he was the seventh "new member" since the League's inception.
- Warren Ellis often used this in his WildStorm work: the faux JLA in Stormwatch, the pulp era heroes in the first issue of Planetary (and the other faux JLA that they fight), and the members of The Authority (whose leader Lampshades the trope).
- "The Seven" are the main superhero team in The Boys.
- Scott Pilgrim: Seven Evil Exes. Gideon takes the "seven" motif Up to 11. He then takes it up to twelve in The Movie, even stating after he swallows his gum that "It's gonna be in my digestive tract for SEVEN YEARS!"
- The Mexican superhero Kalimán is The Seventh Descendant of the Seventh Dynasty of the goddess Kali, and must renew his vow to fight injustice every seven years.
- The seven Endless from The Sandman; Destiny, Death, Dream, Destruction, Desire, Despair and Delirium.
- The seven aspects of the emotional spectrum from 2000s-era Green Lantern, and the Lantern Corps that use each of them: red rage (Red Lantern Corps), orange avarice (Agent Orange), yellow fear (Sinestro Corps), green willpower (Green Lantern Corps), blue hope (Blue Lantern Corps), indigo compassion (Indigo Tribe), and violet love (Star Sapphires).
- For some time, The Avengers were forced into a seven-member roster by the government. It's since become the average roster size.
- In Blaze, seven is identified as a powerful mystical number that can hurt demons and undead beings.
- In the Child Ballad Young Beichan, he promises to come for her and marry her within seven years, in most variants.
- "Snow White and the Seven Dwarfs": Seven dwarfs.
- The Wolf and the Seven Young Kids: Seven little goats.
- The Brave Little Tailor kills seven flies in one blow.
- Blue Beard: Blue Berad had seven wives.
- The Sleeping Beauty: Seven good fairies were invited upon the eponymous princess'birthday.
- The Seven Ravens: The children are changed into seven ravens.
- Hop-o'-My-Thumb uses the "Seven Mile boots" to cross great distances in a small amount of time.
- In Bearskin, the hero must wear the bearskin for seven years. Also neither bathe nor cut his hair nor pray for that time.
- In The One-Handed Girl, the girl is found after seven days in the woods.
- The Seven Foals
- The Giant Who Had No Heart in His Body: Seven princes.
- The Nutcarcker And The Mouse King: the Mouse King has seven heads.
- Seven Simeons: a Russian fairy tale about seven brothers, each being an expert in his chosen trade.
- Played with in A Voice in the Wilderness. USS Bajor science officer Birail Riyannis observes that the Borg ziggurat's dimensions are in multiples of seven kilometers and that the number recurs in civilizations across the galaxy, but first officer Tess Phohl short-circuits her with the question of whether the Borg even use kilometers.
- Hop To It has the seven Miraculouses and Kwamis created by Omega Labs, each suggested to be cloned from the canon Kwamis: Rabbit (equivalent to Ladybug), Dog (equivalent to Black Cat), Swan (equivalent to Butterfly), Chameleon, Mantis, Dragonfly and Firefly.
Films — Live-Action
- Se7en, featuring a serial killer theming his crimes around the Seven Deadly Sins.
- The Magnificent Seven.
- And Seven Samurai, upon which the previous was based.
- James Bond 007.
- There's Something About Mary: "Seven's the number. Like a mouse on a wheel."
- In Hot Fuzz, Nicholas Angel's badge number is 777.
- Just like the book, Scott Pilgrim vs. The World features Ramona Flowers' seven evil exes.
- In Demolition Man, Simon Phoenix overrides a security program on a computer using a string of '7's, causing a cop to become electrocuted.
- In the backstory for the Lone Wolf series, Nyxator the Dragon created the seven Lorestones for the forces of Good. In mockery, Agarash the Damned created seven Doomstones.
- Averted in the Illuminatus! trilogy where the magic number is five. Characters spend some time discussing whether the Law of Fives is real, or an artifact of perception, or if there's a difference.
- Harry Potter:
- Invoked by Voldemort, who planned on splitting his own soul into seven pieces — six Soul Jars plus the piece still in his body. Then he made Harry the seventh Horcrux without knowing it...
- Seven books for seven years at Hogwarts.
- Seven Weasley children.
- This would have culminated with book 7 being released on 7/7/07, but the bomb attacks on London the year before put a damper on that, so the publisher released it on the 21st (7+7+7) instead.
- Practically every number you encounter in the Septimus Heap series is either somehow related to the number seven (often the result of adding the numbers together), or an homage to something or other. There's even a list at the end of the first book.
- Subverted in Discworld, where the most magical number is 8. Magic being a very dangerous thing to play with, there are a lot of superstitions around the number (some people insist on calling it "7a").
- Gilbert L. Morris' books "The Seven Sleepers" series is about seven teenagers who have adventures in a post-nuclear attacked world.
- "Seven Little Monsters".
- Lampshaded in Lord Darcy stories, where the characters are making fun of a sect for thinking 7 is a magical number - in that world's magic, only five - and, to a lesser extent, six - are.
- The Lord of the Rings: The Seven Rings of the seven Dwarf Lords; also a Shout-Out to "Snow White and the Seven Dwarfs".
- And the seven sons of Fëanor.
- The flag of the kings of Gondor depicts seven stars with the White Tree, and there are seven palantíri.
- Aren't the seven stars on the flag emblematic of the palantíri?
- Night Watch has seven levels of Twilight.
- Keys to the Kingdom by Garth Nix has seven Morrow Days who are Trustees of seven Parts of The Will which each represent one of the Seven Heavenly Virtues and wield seven magic Keys, who each hold jurisdiction over one of the seven days of the week and are in charge of one of the seven parts of The House and due to breaking their contracts, each suffer from one of the Seven Deadly Sins.
- A Song of Ice and Fire: Seven is an Arc Number of the series. It's associated with the the Faith of the Seven, the dominant religion in the main setting, the Seven Kingdoms. There are seven aspects of god, septagon-shaped temples called septs, seven hells, seven members of the Kingsguard, etc. George R.R. Martin is currently planning on making the series seven books long; whether he'll actually be able to do that is another matter.
- In Edgar Rice Burroughs's The Monster Men, von Horn has not set foot on a place under American jurisdiction in seven years.
- In Seanan McGuire's October Daye novel Rosemary And Rue, Toby contemplates how she vanished longer than the seven years necessary to declare a human dead.
- In Ruth Frances Long's The Treachery of Beautiful Things, seven years pass between Tom's disappearance and Jenny's following him.
- In the Rainbow Magic series, there are seven fairies in each series and seven magical items Jack Frost stole.
- In Juliet Marillier's The Sevenwaters Trilogy, the protagonist's family lives at Sevenwaters, which has a lake in the centre with seven streams feeding into it.
- The Ordinary Princess: The titular character is a seventh child and her full name has seven words. Her name is Amethyst Alexandra Augusta Araminta Adelaide Aurelia Anne.
- In Midnight's Children, Parvati-the-witch is born seven seconds after midnight, making her one of the most powerful of the titular children.
- Deltora Quest has the seven tribes of Deltora and the seven gems of the belt of Deltora. The third cycle adds the seven dragons.
- Rowan of Rin: "Seven hearts the journey make. Seven ways the hearts will break."
- The Heroes of Olympus: Seven heroes for the Prophecy of the Seven in the series.
- Extreme Makeover: Home Edition built seven homes for seven familes in seven days in their finale.
- Battlestar Galactica (2003): The "significant seven" Cylons. Subverted: There used to be eight, and #7 was unlucky enough to be Abel to Cavil's Cain.
- Seven mysterious Plot Coupons in Defying Gravity, each located on a different astronomical object.
- Game of Thrones:
- The Seven Kingdoms is the name given to the realm that controls most of the continent of Westeros and numerous offshore islands, ruled by the King of the Andals and the First Men from the Red Keep in the city of King's Landing. Its name dates back to the time prior to the War of Conquest, during which seven independent kingdoms existed in the continent.
- The Faith of the Seven is the main religion of the Seven Kingdoms. In death, the Faith believes that there are Seven Heavens and Seven Hells.
- The Kingsguard is an elite group of seven knights, supposedly the greatest and most skilled warriors in all of Westeros, who serve as the royal bodyguard of the King of the Andals and the First Men.
- Survivor season seven winner Sandra Diaz-Twine became the first (and, so far, only) two-time winner by winning season 20, seven years after her first win.
- Doctor Who's A Good Man Goes to War was the 7th episode in its series, and the 777th in the show's nearly fifty-year run. Three days after it aired, on June 7, the BBC officially announced Series 7.
- This was later followed by one of the Executive Producers announcing her departure from the show, at the end of the season, on 7/7.
- Series 7 will be the 49th (7 times 7) year of Doctor Who.
- Merlin had the seven Knights of Medhir.
- In Power Rangers:
- Season 7, Power Rangers Lost Galaxy, was the one where the franchise broke away from the continuous storyline of previous years and began telling a new separate story each year.
- Due to escalation of the use of the Sixth Ranger, Power Rangers S.P.D. and Power Rangers RPM eventually got seven full-time members each. (A bit of a subversion with SPD, though, as the numbers on their suits were 1, 2, 3, 4, 5, VI for 6, and... 100.)
- RPM also finished its run, and with it Disney-produced new episodes, with the franchise's 700th episode. Incidentally, it was Season 17.
- In the Star Trek: The Original Series episode Amok Time, we learn that Vulcans go through heat every seven years (pon farr).
- The Pyramid game show series has employed this seven rule. During the ABC run, they made up to seven correct answers the standard. The "Big 7" category offered a cash prize for running seven out of seven. On the 80s version (CBS, syndication), the category holding the "7-11" card offered an $1100 cash prize for getting seven answers, and the "Mystery 7" offered a prize (trip, TV, video camera, car). The 1991-92 version had "Double Trouble 1" and "Double Trouble 2" (seven 2-word answers) and "Gamble For A Grand."
- Muddy Waters: "I'm The Hoochie Coochie Man".
On the seventh hour
On the seventh day
On the seventh month
The seven doctors say
He was born for good luck
And that you'll see
I got 700 dollars
Don't you mess with me
- The Monkees: "Seven days in a week made to choose from /But only one is right for me..."
- Pink Floyd: "The seven is the number of the young light /It forms when darkness is increased by one" from "Chapter 24" from The Piper at the Gates of Dawn.
- "Lucky Seven" by The Skatalites.
- French rap group IAM wrote an entire song about the symbolic virtues of the number seven.
- Iron Maiden's Seventh Son of a Seventh Son. The opening track even goes: "Seven deadly sins, Seven ways to win, Seven holy paths to hell, and your trip begins..."
- With Märchen being Sound Horizon's seventh "story album", Revo amused himself by making use of the number seven constantly (over a hundred times, in his own words) throughout it: The album's story revolves around Märchen granting revenge to seven dead women from seven fairy tales, each associated with one of the Seven Deadly Sins. One of them is "Snow White and the Seven Dwarfs". The lyrics booklet is seventy-seven pages long, and the number seven always appears in red.
- The Dark Secret Saga features seven black books, seven demons, seven wars, seven white books, seven wizards, seven eclipses...
- The White Stripes: "Seven Nation Army" from Elephant. Starts out with seven singular notes.
- "7 Days, 7 Weeks" from dEUS' album Pocket Revolution, written about the sister of the lead singer.
- In King Diamond's concept album Abigail, the title character was stillborn on July 7th, 1777.
Myths & Religion
- Several religions regard 777 (Rule of Three and Rule of Seven united) as special:
- According to the American publication, the Orthodox Study Bible, 777 represents the threefold perfection of the Trinity. Satan the arrogant and imperfect, is represented with 666.
- A collection of Aleister Crowley's writings is entitled 777 and Other Qabalistic Writings of Aleister Crowley.
- The Seven Deadly Sins
- The Seven Heavenly Virtues
- Seven occurs all over The Bible — seven days of creation; David was the seventh of his father's sons. In Revelation, The Dragon has seven heads, The Beast has seven heads with seven crowns, seven churches in Asia Minor, seven seals, seven last plagues...
- Many Abrahamic traditons include seven heavens.
- The Seven Sleepers
- Any jolly sailor worth his salt will brag about his encounters along the Seven Seas (actually oceans), and brave adventurers in the days of old Arabia will travel across the Seven Deserts.
- The Seven Lucky Gods of Japanese Mythology.
- The seven Maskim in Mesopotamian Mythology, described in a famous poem beginning, "They are Seven! They are Seven!"
- The Jade Emperor of Chinese Mythology has seven daughters, the youngest (seventh) is the one that has the most stories associated with her.
- The Qixi festival is held on the 7th day of the 7th month in the lunar calendar, and is supposed to be the day that its two namesake stars (Altair/Cowherder and Vega/Weaver Girl) are closest to each other.
- In the Book of Judges, the phrase "The children of Israel did evil in the sight of the LORD" is mentioned 7 times, which states that the Israelites begin return to their sin after God saves them.
- In Useful Notes/Islam odd numbers in general, and especially odd primes, are considered auspicious, as they represent the unity and indivisibility of God; therefore, it shouldn't be any surprise that seven shows up at several points in Islam, although not as much as five. The most prominent is probably the Iman al-Mufassil, or Detailed Statement of Faith, in Sunni Islam, which states: "I believe in God  and His Angels , His Books  and His Messengers , in the Day of Judgment , that all things good or ill are the will/fate of God , and in resurrection after death .
- Pagan ritual magick tends to consider seven a powerful number for women, as it's closely linked to the moon.
- The Doctor Who pinball game has the player "collecting" (so to speak) the seven Doctors. It may not have been intentional, since there were only seven of them when the game was made in 1992, but it still counts.
- Super Mario Bros.:
- In Super Mario Bros., there are seven Mushroom Retainers (Toads) imprisoned respectively in the first seven worlds.
- Seven worlds in Super Mario Bros. 2 and Super Mario Land 2: 6 Golden Coins. Justified in the former, as its precursor (Doki Doki Panic) is set in a storybook that lasts seven chapters. In the latter, they're six Zones (the specific areas of Mario Land) plus the castle at the center.
- Bowser has seven minions collectively known as the Koopalings. Bowser Jr., his son, became the eighth in later games.
- Each of the painting worlds in Super Mario 64 has seven Power Stars, including the 100-Coin Star. And in the Nintendo DS remake, each playable character has to catch seven rabbits in order to unlock all special minigames.
- The last level in Super Mario Sunshine is unlocked after defeating Shadow Mario in each of the other seven worlds. And in each of them, Shadow Mario is found in the seventh episode.
- Seven Sprixie Princesses in Super Mario 3D World. Relatedly, seven of the collectible stamps are modeled after them.
- Seven Star Pieces in Super Mario RPG: Legend of the Seven Stars.
- Seven Star Spirits in Paper Mario 64.
- Seven Crystal Stars in Paper Mario: The Thousand-Year Door.
- Super Paper Mario has eight Pure Hearts, but you start the game with one of them, so you've still got to get seven.
- Mario Kart 7, the first game in the Mario Kart series to be numbered this way. Also the debut of the Lucky Seven item, which gives an assortment of seven weapons.
- Sonic the Hedgehog:
- Seven Princesses of Purest Heart from Kingdom Hearts. And the seven Sleeping Keyholes from Kingdom Hearts 3D: Dream Drop Distance.
- Seven needles in MOTHER 3.
- Seven personalities in Killer7, along with a revolver that has seven chambers. The game is also divided into seven chapters.
- In Resident Evil 4, a gun named Killer7 costs 77700 pesetas, and has initially a seven-bullet capacity.
- The Marathon trilogy established Bungie's Running Gag of putting references to the number "7" in everything. Just look at this!
- Prominent in the Halo series, due to this being a Bungie Running Gag:
- There have been whole groves of Epileptic Trees over how almost every arbitrary number in the series is somehow related to 7. One of the more obvious ones is 117, Master Chief's operating number, and that there are seven of the eponymous Halo rings or were, before MC blew one up in the first game.
- 343 Guilty Spark, the namesake of current franchise developers 343 Industries. 343 is 7³. In fact, all the Halos' Monitors have designation numbers that are multiples of 7.
- All over the place with Punch-Out!! Wii's version of Aran Ryan. He can knock you out in seven punches, he always gets up from a knockdown on the seventh count, you can hit him seven times when he's stunned, and sevens pop up in his challenges in Exhibition Mode. He's Irish, so it's a "lucky seven"/"luck of the Irish" gag.
- Final Fantasy:
- Final Fantasy VII (figures) has something interesting happen if a character's HP hits 7777. The Lucky Seven concept continues in the prequel Crisis Core, where getting three Sevens on the Digital Mind Wave (the battle system's slot-machine gimmick) will level up your character.
- Final Fantasy IX contains the attack "Lucky 7s", a Shout-Out to the above.
- The seventh Touhou game is the only one to feature the "Supernatural Border" system, which can and will save your life on occasion. It is also the first game in the series to have visible hitboxes. Also, most of the games have a total of 7 stages - 6 normal and the Extra. The 2 exceptions are Story of Eastern Wonderland (with only 6) and Perfect Cherry Blossom (Phantasm = 8).
- Stage 7 of Battle Garegga is home to a very popular scoring trick involving using bombs on the penultimate boss's grenades.
- DJMAX Technika has a song called "Area 7".
- There are seven tetrominoes in Tetris: I, T, O, S, Z, L, J.
- In Gradius Gaiden, stage 8 of the first loop has six bosses. On the second loop, it gains a seventh boss, Heaven's Gate.
- The best you can get at the slots in the Game Corner is triple sevens.
- In Pokémon FireRed and LeafGreen, the Sevii Islands are are seven normally accessible islands (though certain event lets you access two more) and they were all created in 7 days, according to a lady on Quest Island, the seventh island. Quest Island itself also houses the seven botany-themed Tanoby Chambers, which are chock full of Unown and shrouded in mystery. Additionally, there are seven beta "Sevii Islands" that are not accessible during normal gameplay.
- Pokémon Emerald Version introduces Gym Leader-like individuals known as the seven Frontier Brains, each of whom heads a unique battling facility. To attain success in said facilities, one must repeatedly win by defeating sets of seven Trainers in a row. There are a few exceptions, though.
- In Generation V, the villainous Team Plasma includes a group of high-ranking members known as the Seven Sages.
- Pokémon Mystery Dungeon: Explorers of Time, Darkness, and Sky all feature the Seven Treasures, items which are obtained by defeating seven bosses that guard seven secret dungeons.
- The Legend of Zelda:
- The seven sages in The Legend of Zelda: A Link to the Past, The Legend of Zelda: A Link Between Worlds and The Legend of Zelda: Ocarina of Time, and there were Seven Sages in The Legend of Zelda: Twilight Princess before Ganondorf killed one of them.
- The following games have exactly seven dungeons/stages each: The Adventure Of Link, The Wind Waker and Skyward Sword.
- Seven Zora eggs in Majora's Mask. The number is relevant because all seven must be grouped together so they can hatch. For the same reason, the song the newborn Zora children teach to Link to cure Lulu and enter the Great Bay Temple has seven musical notes in its chorus.
- In the Oracle of Seasons, there is a secret that requires the player to find 777 Ore Chunks.
- No More Heroes references Killer7 with the Lovikov Balls, as there are 49 of them in total (7 x 7), seven are required for a new ability, of which there are seven as well (each of them based on one of Emir's personalities from Killer 7). Also, one of the Dark Side powers are enabled when the jackpot (which appears every time an enemy is killed) hits 777. In No More Heroes 2: Desperate Struggle, both training courses in Ryan's gym have seven levels each.
- In the backstory of the Dragon Age games, Chantry lore claims that the Blight appeared on Thedas when seven ancient Tevinter Magisters traveled to the Golden City of the Maker in an attempt to steal his power. Their invasion of the City corrupted it into the Black City, and they returned to Thedas as the first Darkspawn. The Chantry's lore is all but confirmed in the Dragon Age II DLC "Legacy" with the appearance of Corypheus, one of the original Magisters, who acts as the Final Boss. Each magister corresponded to one of the seven old gods, which means there should be seven blights. Possibly subverted, as there is speculation In-Universe to the existence of an eighth old god.
- The fifth case of Phoenix Wright: Ace Attorney features a police ID that is all 7's. That ID belongs to Police Chief Damon Gant, the murderer of both the current case and the SL-9 Incident.
- The number seven is huge in Tales of the Abyss. Seven fonons for seven elements. Seven fonstones. Six party members, but Mieu makes seven companions, while Asch is something of the seventh playable character. Six God Generals, but their leader makes seven antagonists. Overlaps with Arc Number.
- In Undertale, the monsters need the power of seven human souls in order to break the barrier keeping them underground. They already have six of them when the player character stumbles into their kingdom...
- Fallen London: Seven is the Number. What does this mean? It's not entirely known. But there are more than a few ominous events where the number is relevant, and usually not good news. Especially when it comes to Mr. Eaten's name; there are always a number of horrible acts you must commit on yourself, and that number is always seven. Seven are the scars that will not heal. Seven are the chains that weigh on Seeker's minds. Seven are the stains that mark their soul. And at the end, there are seven candles they must collect.
- Idolish 7 The titular idol group has 7 members
- In the mobile phone game Love Nikki - Dress Up Queen the game's world, Miraland, has 7 nations (Apple Federal, Lilith Kingdom, Cloud Empire, Pigeon Kingdom, North Kingdom, Republic of Wasteland, and Ruin Island), all with their own distinct fashion styles.
- In Koan Of The Day, a reader receives 7 bodhi for every page they visit.
- In American Barbarian, Yoosamon has seven sons.
- xkcd has a number line strip that says 7 indicates a false statistic.
- In Erstwhile, Maid Maleen is locked up for seven years.
- In No Rest for the Wicked, the soldier has to survive seven years to win his bargain with the devil.
- In Cucumber Quest, there are seven kingdoms of Dreamside, and the Nightmare Knight created seven Disaster Masters.
- In The Angry Video Game Nerd's review of Kid Kool (whose full name is Kid Kool and the Quest for the Seven Wonder Herbs), the Nerd says that the game has a story that says that the king has a terminal illness, and that Kid Kool has to find the aptly named Seven Wonder Herbs.
AVGN: Yeah, I bet the game designers were smoking seven different herbs.
- PeanutButterGamer always has 7 people in his Hardcore series.
- Seven original members of the Justice League.
- On Wacky Races, car #7 is occupied by seven little men. Those same seven men appeared a year later on The Perils of Penelope Pitstop.
- My Little Pony: Friendship Is Magic:
- According to the trading cards, there are seven Elements of Harmony, instead of the six shown in the show proper, though this appears to have been made in error, especially in light of the two-part episode "Shadow Play" showing that there were no more than six Pillars of Equestria, who played a direct role in creating the Elements of Harmony.
- Starlight Glimmer joined the main cast in Season 6, making the Mane 6 into the Mane 7.
- Similar to the above, with the addition of Sci-Twi to the cast of My Little Pony: Equestria Girls, the main cast of the EG universe is now referred to as the HuMane 7.
- Snow White and the Seven Dwarfs: Takes the fairy tale's "seven dwarfs" and kicks it up a notch.
Queen: Magic mirror on the wall, who now is the fairest one of all?
Mirror: Over the seven jewelled hills, beyond the seventh fall, in the cottage of the seven dwarfs, dwells Snow White, fairest one of all.
- In The Flight of Dragons, Peter is said by Antiquity to be the 777th descendant of the Great Peter, who taught dragons to speak.
- Miraculous Ladybug has the seven known Miraculouses and Kwamis: Tikki the Ladybug, Plagg the Black Cat, Trixx the Fox, Pollen the Bee, Duusuu the Peacock, Nooroo the Butterfly and Wayzz the Turtle.
- Seven continents on Earth.
- Seven seas.
- Seven wonders of the world.
- Seven days in a week. Which is, in turn, caused by the presence of seven celestial objects regularly visible from Earth — the sun, moon and five planets.
- Seven colors of the rainbow. This is actually a contrivance of Sir Isaac Newton, a well-known scientist and not-well-known mystic. Observing the spectrum of sunlight produced by his prism, he convinced himself that the area between blue and purple was a separate color, indigo, because seven colors would fit his numerology better. The joke of this is, he missed a real seventh color: cyan, between green and blue. In Russian language, cyan IS addressed as the true seventh color.
- As a homage to this trope, the highest jackpots on a slot machine is often assigned to three 7s.
- 21 (7×3) in blackjack.
- Seven is the most likely roll of a pair of standard six-sided dice. In craps, you can win by rolling a seven (or eleven) first, and lose by getting seven on any subsequent roll. The fact that seven is the most likely sum for the outcome of rolling two dice (with a probability of 1/6) is likely the origin of the whole "seven is a lucky number" superstition.
- In chemistry, the pH scale is neutral at 7. And it's not arbitrary at all, since H+ molarity in water is approximately 10^(-7), and pH is a logarithmic scale (though the mole's value, from which molarity comes, is indeed a fixed one).
- The number of daughters of Atlas in the Pleiades (also called the "Seven Sisters").
- And by analogy, "The Seven Sisters" is used to refer to:
- The seven historic women's colleges of the United States (Barnard, Bryn Mawr, Mount Holyoke, Radcliffe, Smith, Vassar, and Wellesley).
- The seven largest oil companies in the world from 1940 to 1973. More specifically, they were part of the Consortium for Iran oil cartel. Before they were sidelined by OPEC, the seven were responsible for a rather large amount of unpleasantness in the Middle East. They are (current names): BP, Gulf Oil, Chevron, Royal Dutch Shell, Esso, Exxon-Mobil, and So Cal.
- The original seven Hollywood film companies.
- The seven main denominations of the American Protestant church: Episcopalian, Lutheran, Methodist, Presbyterian, Congregationalist, Baptist, and Reformed.
- The common English nickname for the seven Stalinist skyscrapers built in Moscow in late '40s to early '50s: Hotel Ukraine, Hotel Leningradskaya, Ministry of Foreign Affairs main building, Red Gates administrative building, Kotelnicheskaya Embankment building, Kudrinskaya Square building and the Moscow State University main building. Built on a massive scale in a combination of American Art Deco and Russian Baroque styles, they were to represent the power of the country emerging victorious from the ruin of WWII. Ironically, two more were planned, but never built, as Stalin died and Khruschev wasn't a follower of his notions of grandeur. Note that the name isn't used in Russia itself, where these are called simply (Stalin's) Highrises.
- Almost all mammals have seven cervical vertebrae.
- A lot of cities are claimed to have been built on "Seven Hills." Rome is the most famous and would be the trope namer if this were a trope itself, but the other wiki has a whole list of them.
- A ladybug has seven spots.
- Seven is the atomic number of nitrogen, which makes up the majority of Earth's atmosphere.
- In physics and metrology, there are seven SI base units: Meter (length), kilogram (mass), second (time), kelvin (temperature), mole (amount of substance), ampere (electric current), and candela (luminous intensity).
- Television channels with the number seven love this.
- Microsoft Windows 7, the first to use the numbering scheme in its marketing since way back with Windows 3.1.
- The reason Ian Fleming gave James Bond the number 007 is because of Real Life Elizabethan spy John Dee, who would sign his letter to Queen Elizabeth I as "007" - the 00 indicating the letter was for her eyes only, and "7" being the luckiest number.
- In the event of a catastrophe that shuts it down, fourteen people from around the world have been entrusted with seven keycards to restart the internet.
- The book of Revelation is perhaps a notable example here. From seven letters to the churches and seven seals to seven spiritual figures and seven trumpets, it generally indicates the state of perfection. The number is also very frequently used in the Gospel of John, who may or may not be the same John who wrote the book of Revelation.
- In the working world, this is often combined with the Rule of Two as it's an unspoken rule that, if you quit, you should give at least two weeks(14 days, 7*2) notice before leaving.
- In the navy, mainly before World War 2 are the Big Seven Battleships which survive the scrapping after the Washington Treaty happened. They were Nelson and Rodney in the Royal Navy. Colorado, Maryland and West Virginia in the United States Navy and lastly are Nagato and Mutsu in the Imperial Japanese Navy.
- The Curse of Tippecanoe, according to legend, managed to claim the lives of seven Presidents (William Henry Harrison, Abraham Lincoln, James Abram Garfield, William McKinley, Warren Gamaliel Harding, Franklin Delano Roosevelt, and John Fitzgerald Kennedy, in that order) between 1841 and 1963 before going dormant in the '80s.