Brain

Brain is a Keyblade wielder who appears in Kingdom Hearts Union χ. He is a member of the Dandelions and was chosen by the Master of Masters to lead a Union after the Keyblade War. Like the other new Union leaders, he was given a book with laws set by Master Ava.

Kingdom Hearts Union χ
As per Ava's instructions, the new Union leaders are to come together in the Keyblade Graveyard following the Keyblade War. Brain is the fourth to arrive, after Ephemer, Skuld, and Ventus, though he's surprised to see that he's not the last. Brain questions if the rules set forth by Ava are set in stone, expressing his wariness to trust Ava because she wants them to lie to the Dandelions about everything that had happened during the Keyblade War. Thinking of how Player had suffered, Ephemer decides that no one else should have to carry the burden of the past. After waiting around for the final Union leader to join them, Ephemer and Skuld elect to go looking for them. Just then, Lauriam arrives, apologizing for keeping everyone waiting, as he had been searching for something.

Upon arriving in Daybreak Town, the Union Leaders enter the Foreteller's Chamber, where Brain finds a copy of the Book of Prophecies and starts flipping through it. Ephemer suggests that they maintain the Union Cross in order to prevent the conflicts of the past world, with the other Union leaders agreeing to reconstitute the old system later as stated in the rules. Brain then elects that, while the Dandelions are reliving the events of the past, they collect the necessary ingredients to create Spirits - sending Ephemer, Skuld and Ventus to collect the ingredients while he and Lauriam stay behind to make the necessary preparations.

Appearance
Brain has black spiky hair that droops down over his eye. He wears a black coat with rolled up sleeves, gold buttons, and a large collar, grey pants, and black cowboy boots. His face is concealed by a black fedora that sports a black feather with a tan streak down the middle.