The robot baby is a robot designed to resemble a baby fish. It only appears in the episode "The Check-Up."
The robot baby has a purple body with a pair of dark purple fins. It also has one tooth and a single lock of blond hair. It has a light blue blanket wrapped around its torso.
Inside the baby, there is a green motherboard, with multiple colored wires on it attached to the baby's head.
When SpongeBob is doing the pinch test to Mr. Krabs, one of the things he has Mr. Krabs pinch is the robot baby's cheek, which ends up beheading it.
|| "Octavius Rex, a.k.a. long, tan, and handsome!"