Jimmy Neutron Wiki

We currently have 121 stubs. Please help us in expanding these articles!

READ MORE

Jimmy Neutron Wiki


Robo-Fiend is Ultra Lord's arch-nemesis.

Appearances[]

In the episode "Normal Boy", Carl and Sheen are playing with Ultra Lord and Robo-Fiend action figures in their school's hallway.

In "Ultra Sheen", it is revealed that Robo-Fiend, despite being a machine, is lactose intolerant. In the same episode, this fact is exploited to defeat him. Sheen sprays llama milk all over Robo-Fiend, which makes him yell: "No! I'm allergic!", and run away until he finally explodes in the distance. This weakness of his was never brought up again.

Trivia[]

  • Despite the fact that Robo-Fiend is lactose intolerant, he is a robot and therefore, non-organic in a sense. Although it's possible that liquids make him malfunction, or perhaps he used to be an organic creature, and his organs were transplanted into a robot body, similar to General Grievous from the Star Wars franchise.
  • Although Sheen states that Robo-Fiend is lactose intolerant, he yells out that he's allergic to milk. It's unknown which of these is true, or if both are applicable.
  • In the episode "Send in the Clones", Sheen was playing with an action figure of him and was making him say to Ultra Lord "You can't catch me!"
  • Sheen's evil clone is a fan of Robo-Fiend and dislikes Ultra Lord. Ironically, Evil Sheen is still wearing an Ultra Lord shirt instead of a Robo-Fiend shirt. This is probably because it would have taken too long for the producers to model one. 
  • A concept of a rejected Ultra Lord spin-off shows him to be a human named Rob Servo.