Brant Carmody Jr in Batman: Bride of the Demon

Brant is one of those characters that appear once only but I love them immensely. He's the son of a corrupt NASA scientist (Brant Carmody Sr), who desperately tries to resurrect him after Brant is accidently caught in some crossfire. He's successful, and Brant is just running around in his tighty whities for the rest of the book.