|This article belongs to the Original Continuity.|
The Red Robot appeared in The Ultimate Sacrifice.
It was first seen when it was fighting Kevin, Gwen and Humungousaur. The team was failing to defeat it, but Humungousaur turned Ultimate and defeated the robot and nearly destroyed it just before Gwen and Kevin realized that Ben was not acting normal.
Ben 10: Ultimate Alien
- The Ultimate Sacrifice (first appearance)