Callum (The Supercat Video Universe)

 The Supercat Video Universe: Volume 1 Callum is the main character in the series "The Supercat Video Universe" where him and his friend Harry decide to get revenge on his Ex-Bully. Not expecting anything else to happen, Callum and Harry both plan to go to the cinema during a day out when Jamie comes and tries to kill him using his newly acquired magic. Jamie's attempt fails and ends up creating 2 other Callums which are the physical embodiment of the personas Callum likes to portray.

Callum and Harry set out to find one of the personas called "Meme Man", they find however that Bill (who has been hired by Jamie to help him take out the personas) has killed him. Bill kills Harry and then Callum attacks Bill but fails and gets knocked out. He wakes up only to realize he has to bury his friend and stop Jamie by himself. Callum starts to feel depressed and almost kills himself with a gun Bill dropped but then he realizes there's still hope and so he creates "Meme Man 2.0" a persona made out of Meme Man's old clothing and Bill's glasses which he dropped during Callum's attack to feel determined to go after Jamie and end it all.

Callum recieves help from the Time Veteran along the way and recieves his Sonic hat back (which Alex helped retrieve when Sonic Callum went to the Time Realm) and real life Chaos Emeralds.

Callum puts on the Sonic hat and goes out looking for Jamie only to be ambushed by "Knuckles" who is Bill's newly created living persona who thinks he's Knuckles from Sonic The Hedgehog. "Knuckles" attacks Callum but Callum avoids the attacks and notices how he has the same looks as Bill and he mistakenly thinks that "Knuckles" killed Harry.

Callum threatens "Knuckles" and tells him that if he really isn't Bill then he can show him where Jamie and Bill are. "Knuckles" agrees to show him where Bill and Jamie are and they run off together.

Callum and "Knuckles" arrive at Jamie's hideout and they see Bill supposedly arguing with Jamie and then leaving. Callums goes to attack Jamie but "Knuckles" flees. Callum still determined to kill Jamie jumps in-front of Jamie and pulls the trigger on his gun. Jamie jams the gun using his magic and Bill appears ready to kill Callum.

Bill fires the gun even though Jamie tells him not to and thankfully misses Callum. The evil duo take Callum to "The Underpass" where they plan for Jamie to kill Callum. Jamie changes his mind and decides to let Bill kill Callum.

Callum uses his Sonic hat's powers to grab Bill gun and turn the tide. Jamie uses his magic and throws the gun out of Callums hand. This leads to Callum and Bill fighting. Jamie leaves them to it as they begin to fight.

Callum finds the gun whilst the fight is happening and he kills Bill then goes after Jamie.

Jamie tells Callum that he has no chance of winning against him as he has magic and he puts a force on Callum to weaken him. Callum decides to fight against the force and then uses the Chaos Emeralds to transform into Super Callum (Callum with a Super Sonic hat). He fights with Jamie and then Jamie decides he's had enough of Callum's powers and he rips off the hat from Callums head. Jamie proceeds to pin Callum against a sand hill and then begin to punch him when suddenly "Knuckles" comes back and decides to help Callum. Callum decides enough is enough and just shoots Jamie with no hesitation.

Jamie falls to the floor lifeless and the magical stone returns to the Time Realm. The Time Veteran resets time to bring back everyone who died and so that Callum can make things right. This event is called "The Time Reset".

 The Supercat Video Universe: Volume 2 

A few days after the events of The Video Universe: Volume 1 ended, Callum encounters Mullac who is another version of himself from an unknown dimension. Callum and Jamie end up fighting Mullac because he turns out to be evil and is in possession of a Magical Stone.

The stone teleports away to another dimension after Jamie hits Mullac with his notepad. After, Callum & Jamie win the fight against Mullac, the magical stone returns back to their dimension but they don't know where it is so they split up. Jamie goes off in one direction to bring in some help and Callum wants to make sure Mullac doesn't get the stone back so he pursues Mullac.

Callum later on finds Mullac holding Bill at gunpoint and then realizes that Bill now has the stone. After escaping Mullac they set out to meet Jamie but they find out he's not at the meeting place so they look around for him.

Mullac appears out of nowhere and kills Bill right in front of Callum. Jamie returns later on and makes Callum promise to find Mullac whilst he buries Bill and grieves. Callum finds Mullac and confronts him but finds Mullac has already activated the stone to teleport him away to his dimension and because Callum is near him they both are teleported away. After being teleported to Mullac's dimension he is supposedly shot off camera and it is revealed that Mullac shot his eye out in the next episode as he meets the Time Veteran and realizes how powerful he actually is. He also gets given a sword by the Time Veteran to channel his power through.

At the end of Volume 2, Callum is forced to kill Mullac to retrieve the stone because Mullac merged with it.

Volume 2 ends with Callum and the Time Veteran (who ends up telling his actual name "Lance" to Callum) both leaving town to take a journey on a boat to fulfill Lance's Dad's unfinished research.

Captain Callum Explores The Universe

Callum appears in Captain Callum Explores The Universe when Captain Callum encounters him and Lance whilst he's out looking for Rifle Rob.

Callum and Lance agree to help Captain Callum get back to his own dimension by the use of the magical stones they have in their possession but their plans are cut short when Callum goes to get ice cream and is knocked out by someone.

Lance discovers Callum laying there and is knocked out as well upon discovering Callum. When Lance wakes he finds that the stones and Callum are missing.

Callum wakes up to find he was kidnapped by a menacing masked man and is now in some sort of hideout. The masked man proceeds to use the magical stones he stole from Lance to create a bracelet to harness the powers of them. He wonders why the man needs him as well as the stones and comes to the conclusion that the masked man is planning something.

Callum notices that he's not the only one who has been kidnapped, he is there with Rifle Rob as well who Captain Callum was looking for. He questions the masked man on why he needs Rob but doesn't get any response. The masked man begins to activate the powers in the bracelet and then turns to Callum to entrap him inside it to harness his powers.

Callum ultimately returns from being entrapped later on once the Menacer is defeated by Captain Callum.