Greg Veder is a student at Winslow High and a classmate of Taylor Hebert's.
Greg had the user name of xX_Void_Cowboy_Xx on PHO, where he was guarded with his identity. He received several bans and probations while on the forum website, including a notable one for lying about being in the city after the aftermath of Leviathan.
He apparently knows some Spanish.
Wildbow describes Greg as emotionally unguarded/immature, super passionate, and lacking in social skills. This is especially true in encounters with the opposite sex.
Greg was described as shorter than Taylor, with a bowl haircut.
He had blond hair and blue eyes. Taylor described him as talking "like he’s going to run out of breath and pass out".
Greg Veder was a class mate of Taylor's from Winslow High and was one of the few who actually interacted with her. He is noted as being one of the few to make several attempts to speak to Taylor in the story.