Similar to its idle animation but Robby moves his legs forwards. Robby stands still with their legs and arms spread apart. There are also two alternate variants of this skin in the item shop, that being: Robby - Dark, and Robby - Metallic Chrome (The former of which more closely resembles the main game skin). In addition, his cheeks are gone, and his right arm is normal while the other one is a chainsaw, since in Piggy it is vice versa. His appearance is largely the same as in base game, but his torso, soles, wrist and his chainsaw are yellowish.

Robby also has a lighter shade of gray for his cheeks. Robby further has red, green, and blue wires poking out of its right eye while having a red pupil on his left. Robby is a gray robot pig with a chainsaw arm and one black ear. Along with Mimi and the Black Hole traps, he was added into the game when Mall - Chapter 10 was released and is also the main bot and antagonist of that chapter.

' Robby was programmed to be a security robot, but something seems to have gone awry.'

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