Roberta Smeffinfeffer has a lot of things going for her. She's bright. She's committed. She's cute. She can hold down a job. She might be the most well-adjusted member of the crew except for the fact she's extremely insecure.

Roberta was stranded on Earth for two years before the crew of The "Steel Duck" found her. They were in need of a ship's doctor, and she had seen a lot of "E/R" episodes. She got the job. Face it, any crew that has a giant hamster for an engine can't be too picky.