Chaos is implied to be the ultimate villain in 8-Bit Theater (and the creator of Cat Coffee). He is mentioned somewhat frequently as the demon king the Light Warriors are destined to destroy.
Role in the ComicEdit
In Comic 62, King Steve tells the Light Warriors that Chaos is the foe they must defeat in their quest. Darko claims to be Chaos's "executive assistant", and implies numerous other dark gods serve him. Garland wishes to summon Chaos to destroy all existence, a desire Black Mage takes up when he takes over the Dark Warriors. Garland's desires later turn to using Chaos to enslave the world rather than destroy it.
Beyond his mentions as a demon king who wishes the world destroyed, Chaos had not appeared for much of the comic, though as Garland and Darko (and possibly Black Mage) served to carry out his will, his influence was still felt. However, in Episode 1180, after Sarda's ultimate blast misfires, Sarda becomes a portal into the world of the living for Chaos, to begin his reign of destruction. However, after later overhearing a conversation the Light Warriors had about whether Chaos would destroy the world or turn it into cake (or fire, but there's more kinds of cake then fire so that's unlikely unless the cake just so happens to be deadly), Chaos changes his plans and decides that he wants to create a cakelogical singularity, just to show that he really is the goddamn embodiment of chaos. Black Mage has revealed to his "friends" he serves the Dark Lord Chaos. Black Mage offered to kill the Light Warriors for him, but he responded he will just use his Supergod powers to "lock the souls of all livings things on this plane in the eternal torment of the darkness between worlds." Black Mage responded by saying the team has to kill Chaos, mainly because Chaos planned to kill Black Mage along with everyone else. As Black Mage has pointed out, they don't know how strong Chaos is in this form. Chaos said they could ask but he said the answer could involve just killing them instantly. After giving the Light Warriors 24 hours to accomplish Red Mage's plan (which they still manage to waste), Chaos transforms into a massive demonic entity in an attempt to terrify Fighter. It doesn't work, and while the Light Warriors are arguing about cake, White Mage and a party of healing mages kill Chaos off-panel with a blinding holy light, after previously convincing him that the world of chaos he wanted to create would in a way be ordered (thus defeating the purpose of making a world of chaos in the first place).
Chaos's appears as the original Chaos sprite from Final Fantasy in his first appearance in Episode 081. When he appears in the real world in Episode 1181, his head (and later, his whole body) is taken from the sprite of Fomortiis, the Demon King from Fire Emblem: The Sacred Stones.