Odgar Rarebit Calrissian is Tim's great, great, great uncle, mentioned only in one of the Brainpop-made game Chronopticon. Like Tim, he has a robot friend too named Protius, the "second most highly advanced mechanism ever constructed". Unlike Tim however, Odgar can overthink things and would want to do dangerous activities like going backwards in time to witness the comet that killed all the dinosaurs 65 million years ago.

He is available only through BrainPOP GameUP, Chronopticon.