Fan Casting The Brain in Return to the DC Universe

Twin brother to Niles Caulder, Miles despised his brother with every fiber of his being, since Niles seemed to have it easy. So in their adult years, Miles had taken Niles out of the picture, faking his own death and taking Niles' life for himself, sometime after Niles had formed the Doom Patrol, causing manipulations of all kinds, even as he sacrificed his life with the Doom Patrol to save Four Heroes, Maine (formerly Codsville). After his revival, Miles continued his schemes, only disappearing to work with Mr. Nobody, dubbing himself the Brain after one of the Doom Patrol's most dangerous enemies.