Rosie

Rosie the maid is a humanoid robot fictional character in The Jetsons animated television series of the 1960s. She is the title family's maid and housekeeper. Rosie is depicted as wearing a frilly apron, and was often seen using a separate vacuum cleaner. Her torso is mounted atop a single leg and she rolls about on a set of caster wheels. She frequently calls George Jetson "Mr. J". She has (so far) appeared in two sketches.

Unsolved Case Files: I, Rosie
In this skit, Rosie is accused of murdering George and at the end gets crushed by a hydraulic press in court. She was voiced by Seth Green.

Aliens Meet the Jetsons
In this skit, Rosie shoots "Ranger" (an alien from a egg which Elroy found on the ship) with her guns causing the creature to bleed acid and fall outside the Jetson home. She was once again voiced by Seth Green.