DC Database

Brainiac was an alien invader who threatened Green Arrow's home dimension.

In a possible scenario after the defeat of one universe's Brainiac, the Green Arrow of this universe realized he needed to return to his reality to warn everyone about the terrors of Brainiac, only to discover his attack had already begun.

However, before Brainiac could collect his world, the alien was defeated by a multiverse-hopping Justice League, who invited Green Arrow to join them.

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Green Arrow Villain(s)

This character has been primarily an enemy of Green Arrow, or his supporting cast including Black Canary and Team Arrow. This template will categorize articles that include it into the category "Green Arrow Villains."

Justice League Villain

This character has been primarily an enemy of the Justice League, in any of its various incarnations. This template will categorize articles that include it into the category "Justice League Villains."