Bob is a momma’s boy, the brawn to Toshiaki’s brains. He is never mean-spirited, but he’s easily led and gullible. Bob follows Toshiaki everywhere, but is the first one to run to Victor for help when he gets in over his head.
In the film, Bob experiments with Sea-Monkeys, which mutates them from normal brine shrimp to strange amphibious creatures. In this state, they closely resemble the fictional humanoid animals that Sea-Monkeys are depicted as in official marketing.