100 Robot is a Cut NPC in Undertale. Unlike their counterpart, 98 Robot, this robot's sprite never even made it into the game's code. Their identity was revealed in the official UNDERTALE Art Book.
Appearance[]
This NPC is similar to the 98 Robot, except their colors consist of green instead of orange. They have the number 100 painted on the sides of their body. In the concept art, both the front and side view of this character can be seen, both sides including an idle and talking frame.
Dialogue[]
Their overall role and dialogue with the character is unknown, or even where they were planned to be, but it can be assumed that they were cut for reasons similar to the 98 Robot.