[[caption-width-right:180:He's gonna [[IncrediblyLamePun bonk]] you back into the Stone Age!]]

'''Bonk''', known as '''PC-Genjin''' in Japan and '''BC Kid''' in Europe, started life as a comic series in a magazine promoting HudsonSoft's PCEngine (alias TurboGrafx16). Many people liked the comic so much, Hudson decided to make a game based off it and even made Bonk the mascot for the system. The games follow the story of a [[SuperDeformed big headed]] caveman named Bonk as he protects his land from the evil King Drool.

''Bonk's Adventure'' was released in 1990, and is one of the most well known [=TurboGrafx=] games. In the U.S. Bonk was marketed as a MascotWithAttitude against Mario, one year before Sega released SonicTheHedgehog.

It was followed by ''Bonk's Revenge'' in 1991. It was a general improvement of every aspect of the previous game.

''Bonk 3: Bonk's Big Adventure'' came out in 1993, and introduced the concept of size-changing candies that would let Bonk take multiple pathways.

The next major title of the series came on the SuperNintendo. Called ''Super Bonk'' (''Chō Genjin'' in Japan, ''Super BC Kid'' in Europe), it followed Bonk's attempt to return to the past after King Drool sent him to the future.

Outside of a playable cameo in ''Saturn Bomberman'', a remake of the first game for sixth-generation consoles, and re-releases on the Wii's Virtual Console service, Bonk has yet to re-appear anytime soon. He was slated to have a new game titled ''Bonk: Brink of Extinction'', but it was unfortunately canceled when Konami bought Hudson.

It also had a spin-off CuteEmUp series called ''VideoGame/AirZonk'' (''PC Denjin'' in Japan).

This has nothing to do with the "catchphrase" of the Scout from ''VideoGame/TeamFortress2''.
!!The Bonk series contains examples of:
* AmericanKirbyIsHardcore: The U.S. box art for the first two Bonk games. An in-game example occurs in ''Bonk's Revenge'', where a image of Bonk in the credits was altered to resemble how he looked in the U.S. artwork.
** Inverted with the 2003 remake of ''Bonk's Adventure'' [[NoExportForYou that was released in Japan.]] Bonk always has a SlasherSmile, and everything else looks less cutesy then it was in the original.
* AnachronismStew: Various enemies use cars, flying pirate ships, and mechas, mostly prominent in ''Bonk 3''. Inverted in ''Super Bonk'', which takes place in modern times with elements from the prehistoric era.
* AngryEyebrows: Bonk every time he eats meat, especially his second transformations. He looks incredibly demented in this state in ''Super Bonk''.
* BaldOfAwesome: Bonk, oh so much.
* {{Bowdlerise}}: In the sequels, Bonk's feminine form was replaced with his angry forms from the first game.
** It wasn't removed from [[MythologyGag Bonk's idle animations]] in Super Bonk though.
* BigBad: King Drool the Third, in both series [[FridgeLogic (despite Air Zonk taking place in the future)]].
** [[spoiler:Although at the end of Super Bonk, King Drool gets sent forward into the future, so it's possible that explains his presence in the Air Zonk games]]
** Actually, the King Drool in the Zonk series is most likely a descendant of the one from the Bonk series.
* BookEnds: ''Super Bonk'' begins with Bonk falling into a trap by King Drool and being sent into the future, [[spoiler: the game also ends this way, only with King Drool in his own trap while Bonk watches him get teleported into the future.]]
* BossRush: The last level in most of the Bonk games involve fighting all of the game's previous bosses before fighting King Drool.
* BrainwashedAndCrazy: The bosses in ''Bonk's Adventure'' are in this state due to mind control eggshells on their heads.
** This applies to the [[{{Mook}} Hatchets]] too, which actually are brainwashed little dinosaurs living in Bonk's world.
* CaptainErsatz: Bonk resembles Krillin from the ''DragonBall'' series, especially in the 2003 remake. The mobile phone game and the cancelled ''Brink of Extinction'' redesigned Bonk, primarily his eyes, to lessen the similarities.
** It's unclear if this was the case with BOF or if it was just ArtEvolution. [[http://www.youtube.com/watch?v=wWxocTEU-LI&feature=related Leaked gameplay footage]] showed the original Bonk sprite was used as a save icon , in addition to a map icon.
** Punchy Pedro from ''Bonk's Adventure'' is basically a dinosaur [[Manga/AshitaNoJoe Joe Yabuki]]. It becomes blatantly obvious when you destroy the eggshell on his head.
* ChestMonster: Some orange flowers in ''Super Bonk'' will attack Bonk when he jumps on them instead of giving him items.
* ContemporaryCaveman: Subverted in ''Super Bonk'', where King Drool uses a time machine to send Bonk into the future. Although he visits a city and a space station, they also have some structures made out of bone frames. This might be because the Hatchets have pretty much taken over the world.
* CoOpMultiplayer: ''Bonk 3'' and the arcade game had another player play as a PaletteSwap of Bonk.
* DefaceOfTheMoon: King Drool takes over the moon and splits it in two. While Bonk liberates the half still in space, he has to retrieve the other half in ''Bonk's Revenge'' and ''Bonk 3''.
* DegradedBoss: Smaller versions of the bosses from ''Bonk's Revenge'' reappear in ''Bonk 3'' as enemies in the sixth stage.
* DiminishingVillainThreat: King Drool started out as a rather dark and monstrous foe, but beginning with Bonk 3 he was portrayed as a smaller, more cartoony villain who relied on machines to attack Bonk.
* EvilIsBigger: The Bosses in this game are ''huge''.
* FreewareGame: The Amiga port of ''B.C. Kid'', developed by Factor 5, is available for download at the company's website. It requires an Amiga {{Emulator}} however.
* GenderBender: Eating meat in the sequels turns Bonk into a girl, complete with [[WhatBeautifulEyes big eyes]] and prancing. This was bowdlerized in the U.S. and PAL releases, though.
* GettingCrapPastTheRadar: In ''Super Bonk'', a series of levels take place inside a dinosaur. After going through the stomach, brain, and heart, you fight the boss in an area labeled "Blue Balls".
* GiantSpaceFleaFromNowhere: Most of the bizarre bosses in Super Bonk appear without any explanation.
* InterspeciesRomance: A weird case involving Bonk and Princess Za. The latter is a non-anthropomorphic (but cute and Bonk-sized) [[{{Squick}} plesiosaur]].
** In the 2003 remake, Princess Za has been given a complete redesign, now she's anthropomorphic and wears a royal dress. YMMV on this being an improvement or not.
* MisbegottenMultiplayerMode: ''Bonk 3'' has co-op multiplayer that makes the game NintendoHard. Both players share the same health bar and lives, and when one person gets hit, the other does not get MercyInvincibility, which can result in players dying twice as fast. Also, while bonking another player doesn't hurt them, it does stun them, either leaving them open to an enemy or knocking them below the screen. Should a player get knocked out of view, the other player can't progress further without either going down and rejoining the off-screen player, or have the off-screen player teleport back to the other one, at the cost of some health.
* {{Mook}}: The Hatchets, small dinosaurs that wear eggshells as helmets.
* MythologyGag: In ''Super Bonk'', some of Bonk's idle animations are all of his transformations from the previous games.
* NakaTeleeli: He did Let's Plays for all the major Bonk games, including Super Bonk 2, the 2003 Japanese remake of the first game, and even one of the Game Boy titles.
* {{Notzilla}}: In ''Super Bonk'', eating ham transforms the player character into a bizarre-looking Godzilla-esque monster.
* PowerUpFood: Meat which seems to increase Bonk's rage/[[FireBreathingDiner make him irritated by the spiciness of the meat]], and candy which affects his size from the third game onwards.
** In ''Chō Genjin 2'', Bonk finds quite [[ExtremeOmnivore many things to eat]]: an [[VideogameFlight egg which transforms him into a bird with the angry eyebrows]], a ''pink meat'' which again lets him turn into a girl with a tutu and ''very strong'' feet, ''weird green glasses'' that turn him into a [[OverlyLongTongue pseudo-frog]] and a shovel which oddly enough gives him a [[ThisIsADrill DRILL on his head!]]
* PunnyName: Bonk's Japanese name, ''PC Genjin'' (which is referred to as PC Kid by Japan's [[BlindIdiotTranslation translation]]), is supposed to sound like PC Engine, the name of the system where the series began, combined with "genjin", Japanese for "caveman."
** This was played with in the ports, with his name becoming FC Genjin on the Famicom, and GB Genjin on the GameBoy.
* PurposefullyOverpowered: After eating two pieces of meat or one huge chunk, Bonk gains brief invincibility, can do twice as much damage, and headbutting the ground damages all enemies on screen, including bosses! Would be a GameBreaker if the power-up wasn't timed, lasting only 30 seconds at best.
* PutOnABus: Princess Za hasn't been seen in any game after ''Bonk's Revenge''.
* QuirkyMinibossSquad: The Hatchet bosses in ''Chō Genjin 2'' are this.
* RecycledSoundtrack: About 1/3 of the music in Bonk's Revenge is reused music from Bonk's Adventure.
* ReformulatedGame: The GameBoy and {{Arcade}} versions of Bonk's Adventure are not ports of the original game, but are in fact completely different games with unique levels and bosses.
* SchmuckBait: Many of the red Floras (those flower things) are usually Venus Bonktraps, enemies that try to bounce on Bonk after he smacks them in their disguises. Another telltale sign is that the Bonktrap disguised as a Flora doesn't move, unlike the real ones.
* SizeShifter: Beginning with ''Bonk 3'', eating candy will either make Bonk huge or make him tiny.
** It though was quite a [[ScrappyMechanic confusing and sometimes frustrating mechanic which made the game even harder and could've made you get stuck in some parts by picking up the wrong kind of candy.]] Luckily Super Bonk fixes this by placing candy in more convenient places.
* UpdatedRerelease: A remake of the first game was released for the GameCube ans PlayStation 2 in 2003. In addition to an ArtShift, the levels are overall shorter, the bosses are completely different, [[GottaCatchThemAll and the fruit have been made collectables, in addition to the new golden wheels.]]
* WeWillMeetAgain: King Drool says "I'll be back!" at the end of each game, and every time he is defeated in ''Bonk 3''. It more or less become his CatchPhrase.
* WhatHappenedToTheMouse: Princess Za never appeared after the two first games, save for her appearances in ''Air Zonk''.
* WidgetSeries: It gets weirder and weirder as the series goes on.
* WithGreatPowerComesGreatInsanity: Bonk's meat-induced transformations come off as this.
* WombLevel: The series is notable for this. In ''Bonk's Adventure'', it is an entire level, while in all future games save ''Bonk's Revenge'', a (much) smaller enemy would have to swallow Bonk whole, requiring the player to escape through it's intestines.
** However, ''Super Bonk'' has both forms of Womb Levels, the second half of Round 2 is inside a giant T-Rex. Appropriately, it is larger than Bonk.
** ''Super Bonk 2'' perhaps has the strangest of all the Womb Levels in the series. The blue pterodactyl that eats you leads to a short bonus room with slots inside it's stomach, before you exit.
* YourSizeMayVary: King Drool is about four times as big as Bonk in the first game, and slightly smaller in ''Bonk's Revenge''. In ''Bonk 3'' and ''Super Bonk'', he frequently changes size, going from the size of a fly to an incredibly gigantic form in the final boss fight in the former and being large in-game yet small in the intro and ending in the latter. In ''Super Bonk 2'', he's barely as big as Bonk himself.