Black

Black is a heroic and courageous young stick figure who would do anything to help the world.

Black was created by The Creator in Dimension 1 as a way to stop conflicts from happening. Later, when The Creator attempted to erase the universe, Black realized his true powers and was able to defeat even a god.

Due to his high potential as a powerful hero, villains have mainly targeted him. In the episode "Possession," an evil spirit from The Pentacle successfully controls Black and makes him attempt to kill Red and the others. Eventually, The Creator is able to get the spirit out of him by punching a segment of his arm off and sucking the spirit out from the wound.

Black eventually finds a mechanical arm made from The Creator's leftover energy, that he then uses to become The Creator's second in command. He has since been training to be able to create his own dimension.

Trivia

 * Black secretly has a crush on Red, though this has not yet been brought up in the series.
 * Black is the first character in the series to appear on-screen.