Caveman "Bob" Cooper is one of Sly Cooper's ancestors, and is a playable character in Sly Cooper: Thieves in Time. Bob Cooper is an ancestor that was created by Sanzaru Games.
Sly and the gang, after defeating Toothpick, end up crash landing in prehistoric times. It is here that they find out there is an ancestor of Sly's living. After they rescue him from The Grizz's men, Sly gives him the name, Bob Cooper, as his tribal name is too hard to say.
As it turns out, Bob Cooper is the very first ancestor of Sly, and he was the king of his time, having created the first cane, which he used to steal pterodactyl eggs. However, when The Grizz arrived, he stole all of the eggs, sending Bob into a depression, causing him to get out of shape and captured.
He is eventually rescued by Sly and the gang, who help him get back in shape so he can help them take down The Grizz. For some reason, Sly and the gang are able to understand what Bob says, despite him speaking in his native tongue. After helping the gang take down The Grizz, he helps them one more time in Le Paradox's Blimp and then returns to his own time. We find out that he becomes the world's greatest egg thief and even creating his cane for thieving.
