The Linda Flynn-Fletcher Robot is a human-like exoskeleton used by the alien Garbog, who is a friend of the alien Meap, to blend in and study life on earth. The pilot of the robot sits in a small area located inside the head. Once the chamber opened, Garbog spoke in a strange language that was a mere repetition of the same gurgling noise. ("Invasion of the Ferb Snatchers"). It is currently unknown what other features or advantages the exoskeleton brings.
When the robot Linda opens its face, it shows Garbog operating it, a reference to the Arquillians, a race of small aliens in Men in Black movies and television series who ride in robotic human suits. A similar robot was seen in "I Was a Middle Aged Robot", but probably it has a different interior design and different capacities and abilities.