Fan Casting Brainiac in Batman And Superman: Rise of The Super Sons

It turns out Brainiac didn't really die like everyone believed twelve years ago after all. When he was "killed", Brainiac transferred his consciousness into the dead body of General Zod that was being stored in US headquarters, just as he had mentally possessed Lex Luthor prior to the death of his old body. After this, Brainiac got in contact with Zod's forces, who reconstructed his rapidly deteriorating body into a cyborg, so it would last much longer for Brainiac's consciousness.