For other uses of the name Bobby, see Bobby (disambiguation).
He is mentioned by Jason Grace at the end of the book. When Juno returns some of Jason's memories, he remembers several of his friends, with Bobby being one of the names mentioned along with Dakota, Gwendolyn, Hazel Levesque, and Reyna. Though the only name that concerns him at the time is Reyna.
He is mentioned during the Camp Jupiter war game. He rides Hannibal the elephant at the beginning of the war games, but at some point he must have gotten off as Hazel takes control of Hannibal later in the game. Bobby later drops off Hazel, Percy Jackson, and Frank Zhang at the boundaries of camp at the beginning of their quest.
Bobby was among the legionaries that were killed in Tarquin's initial attack. His undead corpse was one of the zombies that attacked Apollo, Meg McCaffrey, Hazel, and Lavinia Asimov in Tarquin’s Tomb. His corpse was destroyed by Lavinia.
Not much is know about Bobby's appearance, only that he has brown hair.
- He shares the same name as Annabeth Chase's mortal half-brother.
- In life Bobby seemed to be Hannibal's caretaker, along with Frank, as he was normally seen riding the large elephant.