Characters: Ace Lightning

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    The Lightning Knights 
The heroes of the show, the Lightning Knights are interdimensional superheroes who guard the Sixth Dimension from evil. Their authority spreads to other worlds when Ace Lightning chases Lord Fear to Earth. While only five members are introduced in the series, the show's creator revealed that there were more Lightning Knights, some of which are stronger than Ace and Random Virus combined.

Ace Lightning

The titular character and protagonist. The player character of Mark's video game, Ace Lightning is a Lightning Knight who follows Lord Fear and his gang to the real world to defeat them and restore the broken Amulet of Zoar. However, his time on Earth alters his original programming, discovering new emotions, and experiences, including falling in love with Lady Illusion.
  • The Ace: As his name implies, Ace is regarded as the foremost of the Lightning Knights.
  • Artificial Human: A subverted trope, since he originates from a video game and is made of data.
  • Authority Equals Asskicking: His duty as a superhero and Lightning Knight aren't really needed to show he can put up a fight.
  • Bad Ass: Able to take on just about everyone of Lord Fear's minions at once, as long as he is at full power.
  • Big Damn Heroes: Usually pulls this off once an episode.
  • Brainwashed and Crazy: In Episode 13, Ace is turned into a zombie by Googler's sock puppets.
  • Brought Down to Normal: In Episode 7, Ace's superpowers are removed by Zip and Snip, and he has to walk around disguised as a masked police officer.
  • Catch Phrase: The code of the Lightning Knights: "Do right and fear not."
  • Characterization Marches On: Ace starts off as a wisecracking and heroic superhero, but over time he becomes more human during his experiences in the real world.
    • In Season 2, Ace's original, already faultering programming is destroyed when Lady Illusion gives him real human emotions, making him undergoe a variety of changes.
  • Chaste Hero: Ace admits he has never flirted before. And he is a 32-year old. However, this can be justified since he is a video game character and his programming likely didn't involve romance.
  • Chest Insignia: A lightning bolt.
  • Dating Catwoman: Ace dates Lady Illusion, although it is in secret for most of the first season.
  • Deadpan Snarker: Often gives quips when fighting the villains.
  • Does Not Know His Own Strength: Former Trope Namer. Ace's superhuman strength causes him to unintentionally trash Mark's house throughout the first season.
  • Dumb Blonde: Subverted. Ash has his moments of stupidity, not understanding the lifestyles of Earth or Mark's social life.
  • Fish out of Water: Ace is bamboozled by Earth, often fiddling with technology in Mark's house and destroying it. He also develops a hatred for garden gnomes, although this stems from an encounter with living gnomes in the Sixth Dimension seen in the video game. Ace again fits this trope when he experiences his new emotions in the second season.
  • Flight: Ace can propel himself to fly at the speed of electricity.
  • Glass Cannon: Becomes this when he is low on power.
  • The Hero
  • Heroic BSOD: Ace literally has one when he is frozen in place when a virus interrupts a data transfer. Lady Illusion snaps him out of it with their First Kiss.
  • Heroic Vow: The code of the Lightning Knights - "Do right and fear not."
  • Interdimensional Cop: Operates in the Sixth Dimension, but is implied to have authority elsewhere too.
  • Lightning Gun: Ace has two "wrist cannons" which can fire his electrical attacks from.
  • The Nicknamer: Often refers to Mark as "Kid", Chuck as "Upchuck", and nicknames the villains teasingly.
  • Paper-Thin Disguise: Happens several times. He dresses as a hooded janitor to save Mark; dresses as a masked police officer when Googler steals his powers; and as a motorcyclist wearing a helmet during his stakeout with Mark to keep an eye on Samantha.
  • Playing with Fire: Subverted. In the second season, Ace gains an ability called "Ring of Flame" which projects small rings of fire.
  • Running Gag: Ace often breaks objects in Mark's house, usually out of curiosity although some cases he thinks he has done wrong and breaks them. Mark's parents never learn how the objects break and blame "shoddy American construction." Such victims of Ace's curiosity include a blender, Mark's backdoor, the handle of a fridge, Mark's bedroom window, and a running machine owned by Mark's mother Fiona. Ace also destroys several garden gnomes, and a hand dryer in the school. Ace lampshades this in the finale of Season 1 when he successfuly evades breaking Mark's window again.
  • Shock and Awe: Ace uses lightning in all of his battles and can even turn it into multiple forms - including spears, a lasso, an energy ball, and can create a wall of electricity which envelopes Ace and causes him to disappear.
  • Super Strength: Able to lift up Anvil with two hands, raise a car with one, and crush Mr. Cheseborough's car by falling from the sky.
  • Superheroes Wear Capes: Averted. Ace comments he would hang up his cape if he had one, and a place to hang it.
  • Welcome to the Real World: Ace has a hard time getting used to Earth.
  • What the Hell, Hero?: Ace goes a bit crazy when he first gains his emotions - he shouts at Mark, attacks Random Virus after he came to help him, and even accidentally shoots Chuck with a lightning bolt although he survives. This snaps him back into sanity.

Mark Hollander

The viewpoint character of the series, a British teenager who moves to the USA with his parents. After his house is struck by lightning, Mark becomes Ace Lightning's reluctant sidekick and struggles to balance his normal life with being a hero.
  • Apocalyptic Log: Mark talks to his friend Pete via a webcam usually in every episode.
  • Audience Surrogate: Usually the primary p.o.v. in the series, but goes beyond being a mere representative for viewers.
  • Badass Normal: At first he hides during early battles but then confronts Random Virus repeatedly, fights Zip and Snip, Pigface, and Fred separately using makeshift weapons, and is even willing to fight Lord Fear.
  • Beleaguered Assistant: Mark is very reluctant to be Ace's sidekick at first, worrying about the danger and consequences, which show themselves through Season 1. He mellows out over time, but still has a cautious attitude to it. Played straight in early episodes where Mark has to bring some reality to Ace's programmed understandings of his own life.
  • Big "NO!": In the final episode where Mark thinks Ace as been mortally wounded by Lord Fear, but it is revealed to be Lady Illusion in disguise.
  • Disguised in Drag: Played with hilarious results in the ninth episode. Mark dresses up as a teenage American girl to keep an eye on Samantha - encountering Chuck, his parents and Wayne who ends falling in love with his female counterpart.
  • Expy: Rick Siggelkow said Mark was inspired by Peter Parker.
  • Genre Savvy: Though not as much as Chuck.
  • I Just Want to Be Normal: Though technically he is, it's just the life going on around him which isn't normal in any way whatsoever.
  • Kid Sidekick: The Robin to Ace's Batman (though Ace isn't really like Batman).
  • The Lancer: To Ace, though he is still the show's lead protagonist.
  • Lightning Gun / Shock and Awe: Gets his own wrist cannon in the second series which fans have affectionally called "The Super Glove of Doom". It does have a strong resemblance to the Power Glove.
  • Narrator: He never directly addresses the audience, but rather shares video messages with Pete describing his experiences with Ace and co.
  • Ordinary High-School Student: Before becoming a superhero's sidekick, though he tries to maintain this trope throughout.
  • Refusal of the Call: Mark repeatedly refuses to become a superhero, at one point quitting the superhero business all together after Sparx openly insults his abilities as one.
  • Reluctant Warrior: Mark keeps saying throughout the series that he is not a hero or a Lightning Knight. He eventually accepts his role.
  • Sadistic Choice: Mark nearly has one in Episode 26 when he's given the tedious decision whether or not to delete the game from his computer, which would delete all the character too. He doesn't go through with it, of course.
  • Supporting Protagonist: He is technically this to Ace, but is the main protagonist of the series.
  • 10-Minute Retirement: Mark quits the superhero business for half an episode.
  • Wake Up, Go to School, Save the World: That's pretty must the jist of this show - with video game characters. Mark even appears to acknowledge this in Episode 2 - "First save the world, then be home in time for dinner."

Chuck Mugel

Mark's Fat Best Friend. A jovial, excitable nerd, Chuck is bright and upbeat, and a big fan of the Ace Lightning video game. He is smarter than he looks, becoming Ace's secondary sidekick in Season 2 and the Lightnin Knights' Techno Wizard.
  • Adorkable: Nerdy, smart, chummy, bullied, wears glasses, likes video games and nerd-associated stuff, easily flattered and excited, but very humble at heart.
  • Cloud Cuckoolander: His Totally Radical personality and exciteable nature emphasize this.
    • In Episode 4, he is exposed to one of Lady Illusion's bombs, making him delirious, and starts singing "My Lord Kumbaya".
  • Demonic Possession: Chuck is possessed by Rotgut in Episode 36. Chuck doesn't seem harmed by it, other than Rotgut has taken over his body, not that he does much harm with it.
  • Disappeared Dad: Chuck's father is never mentioned nor seen.
  • Embarrassing Nickname: Wayne calls him "Upchuck" for his vomiting habit. Chuck calls his superpowered foot "Thunderfoot" for a short time.
  • Fat Best Friend: A mixture of all three types.
  • Full Name Ultimatum: Jessica calls Chuck by his full name when angry - "Charles Nelson Mugel".
  • Genre Savvy: His knowledge and experience with the game make him well prepared for the characters, even if he freaks out when finally meeting them.
  • Nerd Glasses: Gains them in Season 2.
  • New and Improved: Chuck pretty much describes himself as this in the first episode of Season 2.
  • No Social Skills: Subverted. Chuck is just waiting to have someone to socialise with, and befriending Mark allows him to hang out with the likes of Samantha, Brett, and Heather.
  • Not Quite Dead: Chuck is almost killed by a rampaging Ace, but recovers.
  • Plucky Comic Relief: Pretty much the funniest character in the show. His habit of being sick is often used as a Running Gag, and his tendency to overreact to events.
  • Proud to Be a Geek: He is often bullied for his weight and nerdy status, but it barely bothers him. He reminds Wayne that some of the greatest minds in history were laughed at but did great things.
  • Rebel Leader: A non-standard example. Chuck rallies the students to rise up against Mr. Cheseborough's Big Brother-esque routine in Episode 25 after, particularly after he finds out the food budget has been cut in the school cafeteria.
  • Secret Keeper: Keeps Mark's secret after discovering Ace's existence in Season 2.
  • Sidekick: To Mark, and then Ace.
  • The Smart Guy: The tech expert for the heroes.
  • Superpowers For A Day: Chuck gains superhuman strength after being struck by a deflected lightning bolt.
  • The Smart Guy: Despite being bullied, Chuck is quite intelligent, building is own robot with help from Mr. Cheseborough and spends time at a computer camp.
  • Techno Wizard: Chuck is a gifted child, able to construct his own robot to win a tri-county science competition. His knowledge of computers, and the video game, make him the perfect recruit for the Lightning Knights.
  • Theme Tune Cameo: Chuck whistles the theme song in Episode 37.
  • Vomit Chain Reaction: Chuck has a nasty habit of being sick. In the first episode he comments how he threw up on a bus and it caused pandemonium. This trope really comes into play in Episode 4 where Chuck hurls after finding a pea in his tappioca pudding, causing other people in the room to throw up and flee the cafeteria.


A young, energetic but reckless Lightning Knight summoned by Mark. Lacking superpowers, she makes up for it by being a martial artist and uses the Sword of Jacob in battle, and flies using the Lightning Flash hovercraft.

Random Virus

A 35-year old Lightning Knight and an old friend of Ace. He became a cyborg in an undisclosed accident, but his mind was scrambled, creating a Split Personality that causes him to change alignments. Because of this, he hides away in Conestoga Hills' junkyard, and is often sought by Ace and Lord Fear for recruitment.
  • Affably Evil: Happens on and off. Random's evil side is a psycho, but he won't attack Mark when realises he is afraid of him, but is not a coward. Though in later episodes, he attacks Mark regardless of what he thinks.
  • Artificial Limbs: Random lost much of his body in an offscreen accident, resulting in the loss of his legs and his right arm. He now has caterpillar tracks and a large claw instead.
  • The Atoner: His good side.
  • Ax-Crazy: His evil side is hellbent on crushing weakness.
  • Bad Ass: The most powerful character after Kilobyte.
  • Big Damn Heroes: Random repeatedly pulls this off in the series, though on the last occasion, an emotionally unstable Ace blindly electrocutes him, causing Random to storm away in anger. Though he comes back to save the day two episodes later.
  • Byronic Hero: Has some traits, volatile in his emotions, stays by himself for the safety of others, etc.
  • Chained to a Rock: Lord Fear chains Random up when he tries to join the villains, unsure if he can be trusted let alone controlled.
  • Corrupt Cop: Only when his evil side is in control.
  • Crush. Kill. Destroy!: His evil side believes all things good in the universe are weaknesses and vows to crush them.
  • Cyborg: An unspecificed incident let to his mismatched cybernetic appearance.
  • Down in the Dumps: Random hangs around in a junkyard and is quite depressed, so it suits him.
  • Evil Cannot Comprehend Good: His evil side views all things good, heroic, and peaceful to be weaknesses.
  • Fallen Hero: Ace often reminds him of this, causing Random to join in the fight as a hero.
  • Heel-Face Revolving Door: Switched sides a lot, often due to his personalities or manipulation by the villains.
    • Acts as something of a Power Limiter in the first season where he can easily flatten any other game character, and hence is courted by both sides but neither are able to hold onto him thanks to his unstable personality. Less noticeable in the last thirteen episodes where the other Lightning Knights get stronger attacks and the Evils get a new leader specifically created to dominate everyone else to come out of the game.
  • Jekyll & Hyde
  • Lightning Gun: Random has a wrist cannon but only uses it in the game, and shoots fireballs from it.
  • Punch Clock Villain / Punch Clock Hero: Depending on which side is in control, both can be either eager to join the heroes/villains, or remain neutral.
  • Red Eyes, Take Warning: His right eye turns red when he's in Crush. Kill. Destroy! mode.
  • Roaring Rampage of Revenge: When his evil mode is in control.
  • Screw This, I'm Outta Here!: In the second season, Random willingly comes to Ace's assistance fighting Lord Fear, unaware Ace has just suffered from Lady Illusion's Emotion Bomb. The emotionally confused Ace zaps Random with a lightning bolt and claims he didn't ask for his help. The enraged Random leaves, vowing never to help Ace again. Though this vows disappears when he sees Ace falling apart and they become allies again.
  • Split Personality: The unseen accident that cost Random dearly scrambled his programming, leaving him with a good side and an evil side that way switch without a moment's notice. His good side wishes to aid the other Lightning Knights but is cautious of doing something he will regret forever, while his evil side is a violent psychopath who wants to wipe out all things good.
  • Technopath: Able to control machinery, though we don't see much of this power.
  • That One Boss: In the video game.
  • Two-Faced: He doesn't mean to be.
  • Wolverine Claws: Subverted. Now in the traditional style, but more of a large two-pronged claw resembling a car crusher.

     The Carnival of Doom 
The bad guys of the series, also known as the Evil Gang but often called the Carnival of Doom. The villains are a group of freakshow-esque characters who live an Amusement Park of Doom. Lord Fear, the Big Bad of the series, leads the carnival with the plan to conquer the world using the Amulet of Zoar's powers. The villains can constantly return after being defeated (i.e. spawning), morphing into locations around the carnival to rest and recover until their next appearance. The carnival is later taken over by Kilobyte.

Lord Fear

Ace's arch nemesis, a 352-year old lich who wants to conquer the world. Accidentally crippled in the past by Ace, Lord Fear's hatred for the superhero is only rivalled by his desire for power, namely through the Amulet of Zoar. He walks with a permanent limp, using his minion Staff Head as both a crutch and weapon. Cunning and charismatic, but short-tempered, Lord Fear rules the Carnival of Doom from the haunted house, where he is usually found playing a pipe organ.
  • All Part of the Show: Lord Fear tries to gain the final piece of the Amulet during the school's performance of The Phantom of the Opera, but sees the audience applauding him and he joyfully sits down and plays a pipe organ. Mark decides to include him as the Phantom since Chuck (who played the Phantom and wore a Lord Fear-styled) threw up and is offstage.
  • Amusement Park of Doom: The Carnival of Doom.
  • Bad Ass: Able to take on all the heroes despite being a crippled undead old man.
  • Bad Boss: He will abuse and insult his minions when they fail him, usually Dirty Rat or Duff.
  • Badass Biker: Lord Fear becomes even more awesome when he gets the Doom Wagon, a rocket-powered motorcycle-hovercraft with a chainsaw on the front.
  • Badass Boast: "I too have learnt a valuable lesson - if this friendship gives Lightning and his lackey strength, it can also be used against them. I will have my vengeance for how he crippled me in battle, and then, I'll unleash all the terrors of the Sixth Dimension on this worthless world!"
  • Badass Grandpa: He's 352-years old and can still kick ass.
  • Big Bad: For the first season until Kilobyte comes calling, forcing him to become The Dragon.
  • Cool Old Guy: Three centuries old, can play the pipe organ, wants to take over the world.
  • Dem Bones: He is a lich after all, though this doesn't stop him from doing things a normal skeleton could do.
  • Demoted to Dragon: Kilobyte demotes him to this after taking over.
    • Dragon with an Agenda: It is obvious he intends on defeating Kilobyte sooner or later, not that it bothers him much. He eventually teams up with Ace to defeat Kilobyte.
  • Enemy Mine: Teams up with Ace twice in the series. The first is briefly to take out a psychotic Random, and again in the series finale to destroy Kilobyte.
  • Evil Laugh: Very good at it.
  • Extendable Arms: Lord Fear can extend his arms and neck like a boa constrictor. Utilises them usually to just yell at his minions from a far off distance or scare Wayne and his friends.
  • Final Boss: In the show and the video games.
  • Freudian Excuse: His crippling by Ace is all the excuse he needs to take over the world.
  • Handicapped Badass: While his limp makes it difficult for him to walk, Lord Fear makes up for it with his intelligent, skills, and weaponry.
  • Haunted House: Lives in the ghost train at the carnival.
  • Large Ham: "Say goodbye Ace Lightning, you superhero scum!"
  • Lean and Mean: A skinny sinister skeleton.
  • Limp and Livid: Lord Fear limps thanks to Ace, using Staff Head as support.
  • The Nicknamer: Lord Fear often gives his allies and enemies nicknames. These include "Totem of Terror" for Staff Head, "Muscle-Bound Minion" for Anvil, and "Grinning Ghoul" for Googler.
  • Ominous Pipe Organ: He is a master of the pipe organ and never actually had a lesson.
  • Our Liches Are Different: A standard version though it is not explained how or why he is a skeleton.
  • Repulsive Ringmaster: As the leader of the Carnival of Doom, Fear qualifies.
  • Revenge Before Reason: Lord Fear's primary motive is vengeance against Ace after he crippled him. This extends to Lady Illusion after she betrays him for Ace.
  • Skeletons in the Coat Closet: Aside from being a skeleton himself, he wears skulls on his belt and coat.
  • Take Over the World: Rather destroy the world then leave to conquer other dimensions.
  • Triang Relations: With Lady Illusion, who loves Ace, whom he hates.
  • The Undead: Of the lich variety.
  • We Will Meet Again: Promises this to Ace in the twenty-sixth episode.

Staff Head

Lord Fear's talking staff who acts as his weapon and confidante. Resembling a winged frog-like gargoyle, he speaks with a Cockney accent, and has a pompous, rude attitude.

Lady Illusion

A shapeshifting villainess, Lady Illusion is Lord Fear's partner in love and crime. However, shortly after arriving on Earth, she strikes out on her own only to form a forbidden romance with Ace, leading to a secret affair throughout Season 1. She is a powerful villain, also able to teleport, and create crystal ball-shaped bombs.


The Big Bad of Season 2. Created by the Master Programmer to complete Lord Fear's role, Kilobyte is known as the Cyber Stalker. Cold, calculating, and manipulative, Kilobyte has the mind of a hunter, plotting to destroy Ace as slowly and painfully as possible. He is very powerful, using his Combat Tentacles to absorb a character's energy or give them new powers. He mutates an ordinary wasp into a giant mutant he names Fred. Merges with the carnival's ferris wheel.

Dirty Rat

A winged rat dressed as a clown, Dirty Rat acts as Lord Fear's spy. He has enhanced senses, and is a scheming, cowardly character. Has a friendship with Duff Kent, and morphs into a gargoyle.


The Dumb Muscle of the Carnival of Doom, Anvil is a large anthropomorphic rhinoceros with a short temper and an iron anvil in place of a right hand, hence his name. He is terrified of the dark. Morphs into the carnival's high striker game.


A disgusting but dumb pig-like minion who can devour anything. He morphs into a trashcan.


A psychotic jester who is summoned by Lord Fear early in the series. He has a grudge against Ace and wants to "googlerize" him. He wears two talking sock puppets named Zip and Snip, who can chew through any surface and display other abilities. He morphs into the carnival's puppet theatre.


An undead cowboy introduced in Season 2. Rotgut is Laughably Evil and useless. He is more concerned with keeping his limbs in check than doing evil, and hates it when he is referred to as a zombie and prefers to be called the "Walking Dead". He develops a liking towards Chuck and plots to zombify him, at one point possessing Chuck's body.


Kilobyte's giant mutant pet wasp, Fred is used by transport. Originally a normal wasp, Fred stung Kilobyte and took on his powers, becoming a giant wasp. He does not speak aside from screeches.

     Supporting Characters 

Samantha Thompson

Mark's first girlfriend, Samantha is a popular girl in school and spends the entire series as the lead female character, but is oblivious to Mark's second life. She has an on-and-off relationship with Mark and eventually moves away to a boarding school in Season 2.

Kat Adams

Introduced in the second season to replace Samantha, Kat Adams becomes Mark's third girlfriend. A spunky, outgoing girl she shows great skills in basketball and becomes co-editor of the high school newspaper, making it her goal to discover the secrets of the Carnival of Doom.

Pete Burgess

Mark's Black Best Friend, Pete appears mostly on webcam-recorded messages since he is in the UK. Pete acts as Mark's Mission Control, often giving him advice on how to deal with his superhero and normal lives.

Wayne Fisgus

The Jerk Jock, Wayne often bullies Chuck and wears a baseball cap at all times. He is terrified by Lord Fear, calling him the "Bone Man". His cousin Jessica ends up dating Chuck.
  • A Day in the Limelight: Twice, once in both seasons.
  • Badass Boast: Wayne's father, a hunter, has a tendency to boast about his experiences in the forest. Turns out he is a bit of a wuss.
  • The Bully: While it seems Wayne enjoys having a reputation as a bad boy, he dislikes being always blamed for trouble in school.
  • Chase Scene: Wayne chases Chuck around a couple of times, and then gets involved in a chase scene involving Mark and Lord Fear.
  • Cowardly Lion: He is terrified of Lord Fear, and yet goes looking for him at the start of Season 2 after he vanishes. Getting onto the haunted house ride at the carnival, Wayne looks for Lord Fear and Staff Head only for them to pop up behind him and scare him off again. Lord Fear admits he enjoys scaring him.
  • Jerk Jock: He is goalkeeper on the middle school football (soccer) team.
  • Nice Hat: Wayne always wears a baseball cap.

Heather Hoffs

Samantha's best friend, Heather is a preppy girl who finds Mark attractive and becomes his second girlfriend after Samantha splits up with him. A cheerleader, fashion expert, a gossip girl, and a fan of martial arts films, Heather is a very bossy and strong-willed girl and is less forgiving than Samantha when Mark skips their dates to aid Ace. In the second season, Heather becomes a Alpha Bitch, a dislikable, venom-spewing little monster wishing to seemingly destroy Mark and dates Brett.

Brett Ramirez

Samantha's first boyfriend, Brett is a skateboarder and soccer player. He maintains strong friendships with Mark and Samantha and has an on-and-off relationship with Samantha. He ends up dating Heather, but he becomes her Butt Monkey.
  • A Day in the Limelight: Gets a leading role in episode twenty-two when he, Mark, Chuck and Simon go camping.
  • Butt Monkey: He is Heather's butt monkey until the last episode of the show.
  • Footy Rules: Soccer is Brett's favourite hobby.
  • Jerk Jock: Thankfully avoided. After splitting up with Samantha, Brett is seen sitting with Wayne. However, he still spends time with Mark and Samantha and supports their relationship.
  • Nice Guy: He becomes Mark's romantic councilor in the second season.
  • Understanding Boyfriend

Mr. Cheseborough

Mark's science teacher, Mr. Cheseborough has little faith in his students and often insults and begrudges them, often taking pleasure in failing them. He encounters the villains early on when they kidnap him in one of their plans, causing him to believe they are aliens. He becomes slowly paranoid and crazy over the series.
  • Agent Scully
  • Alien Abduction: From Mr. Cheseborough's point of view.
  • Cloudcuckoolander: His repeated encounters with the "aliens" leave Mr. Cheseborough quite crazy, and in the final episode he pretty much flips out and is declared a public nuisance by the authorities.
  • The Cuckoolander Was Right: Subverted. Mr. Cheseborough's claims of alien abduction is technically true - he was abducted by inhuman creatures from another world.
  • Horrible Judge of Character: Lord Fear and Duff trick Mr. Cheseborough into believing the villains are good aliens and Ace is evil, and to help Lord Fear kill him.
  • Innocent Bystander
  • Jerk Ass
  • Mad Scientist: Labelled one when captured by the villains.
  • Madness Mantra: "The aliens!"
  • Not My Lucky Day: Mr. Cheseborough has numerous bad days. One in particular results in Ace crashlanding on his beloved car, and his briefcase is run over by the villains' ice cream truck.
  • Room Full of Crazy: Mr. Cheseborough has an alien abduction support meeting in the high school with people just as crazy as he is, but Ace crashes through the window and the group flee out of the school screaming hysterically.
  • Sadist Teacher: Mr. Cheseborough is incredibly nasty towards his students. In Episode 3, he marks student quizzes and deliberately marks a correct answer incorrectly. He becomes temporary head teacher at one point and turns the school into something out 1984.

Duff Kent

The owner of the Kent Bros. Carnival, turned into the Carnival of Doom by the villains, Duff is a middle-aged man who ends up becoming Lord Fear's slave. Very much the Innocent Bystander, Duff dislikes working for the villains but goes along with it for most of the time. He befriends Dirty Rat, Rotgut, Pigface and Googler (sort of), and at times gets on well with Lord Fear. He also drives an ice cream truck as a secondary job, but the villains use it to get around.
  • A Day in the Limelight: In Episode 20, where he spends the whole episode on a psychiatrist's couch explaining what is going on.
  • Amusement Park of Doom: He doesn't want his family carnival to be one.
  • Badass Bystander: In Episode 26, Duff turns against Lord Fear and tries to run him over.
    • In Season 2, he is back to serving him although on a more equal term.
  • Butt Monkey
  • Cartoon Creature: Duff refers the video game characters as cartoons.
  • Freudian Couch: Duff spends the entirety of Episode 20 on one.
  • Innocent Bystander: Shared with Mr. Cheseborough, not wanting to be involved in the war between the Lightning Knights and villains.
  • Nice Hat: He wears a cap for the first season, and a funky wicker hat in the second.
  • Some of My Best Friends Are X: Subverted. Duff's best friend is a flying talking rat.

Rick Hummel

Appearing as an ordinary computer store owner, Rick Hummel is a grouchy shopkeeper who bosses Chuck around and spends much of his time in his backroom, his "Fortress of Solitude". Really the Master Programmer, creator of Kilobyte, and programmer of the Ace Lightning game.

Fiona and Simon Hollander

Mark's British parents. Both are oblivious to their son's double life as a superhero, and blame Ace's breakages on shoddy American craftsmanship. Simon is 45 years old, an accountant and tries to adapt to American life, speaking American catchphrases and tries out various gadgets with hilarious outcomes. Fiona is more down-to-earth and likes to remind her family they are still British, and often cooks British food and loves garden gnomes. She is a real estate agent.
  • Adults Are Useless: They are oblivious to their son's life as a superhero, and never directly encounter the video game characters. The closest they came to that was meeting Ace who was dressed as a motorcyclist at the time.
    • Mark actually tells them the truth in the fifth episode but they just assume he is acting his age and being imaginative.
  • Berserk Button: Do NOT mess with Fiona's gnomes or her garden. Simon's berserk button is when someone insults his son.
  • Bob from Accounting: Simon mentions numerous fellow accountants but only himself and Bud Ratburn are shown onscreen.
  • D.I.Y. Disaster: Simon often tries out new gadgets, some of which are broken by Ace beforehand. Simon also tries out a rideable lawnmower which he demolishes Fiona's garden with.
  • I Am Very British: Fiona tries to never forget her British origins. She keeps garden gnomes in the "proper English garden", and cooks British food for Mark's Halloween party.
  • Invisible to Adults: Ace, Lord Fear and co. are never seen by Simon and Fiona - whilst pretty much every other adult character in the show encounters one or more of the video game characters.
  • Lethal Chef: Simon displays his inability to cook, turning sausages into charcoal. Ahsley wisely avoids eating them.
  • Our Gnomes Are Weirder: Fiona loves garden gnomes. Ace not so much. The video game has deadly garden gnomes as enemies, which Ace gains his hatred from and he deliberately destroys multiple garden gnomes.

Ashley Hollander

Mark's little cousin, Ashley is the third human to learn of Ace and co. She promises to keep it a secret and becomes a recurring character. She has a pet hamster named Chika, which Ace finds adorable, and in her first episodes has a thing for cuddly toys. Ashley and Chuck get on like a house on fire, and enjoy horror films.

Jessica Fisgus

Chuck's girlfriend and Wayne's cousin. A nerdy girl who is just a fan of Ace Lightning as much as Chuck is, the two start dating. Jessica wants best out of their relationship, which makes it tricky after Chuck finds out about Ace.
  • Beautiful All Along: In Episode 26, Jessica arrives late for the school prom and removes her hairband and glasses to reveal her true beauty.
  • Blackmail: Jessica pulls this off on Wayne to let her spend time with Chuck, revealing his mum called him "Boogerbox" when he ate the contents of his nose.
  • Lovable Nerd
  • Plucky Girl

Nettie Kutcher

The middle-aged dinner lady at the middle school, Mrs. Kutcher is a bit of a disgruntled employee believing no one appreciates her cooking aside from Chuck. She mostly provides comic relief, but acts motherly towards Chuck and occasionally Mark.