Bob is the janitor of the ship and is... human? He's incredibly kind and approachable, friendly to everyone, and energetic despite having an old body. Bob is quite a 1-dimensional character and is seriously only worried about cleaning the ship and being nice. He cares about everyone, despite the fact everyone is super creeped out by him.

His voice should sound high pitch, kind, and very very southern.

Think Old Man McGucket from Gravity Falls but calmer.