Invader ZIM Wiki
Invader ZIM Wiki
Mr. Sludgey
Mister Slushy Mugshot.png
Name Mr. Sludgey
Type Human Technology
Use(s) Children's Entertainer
First Appearance The Most Horrible X-Mas Ever

Mr. Sludgey is a robotic snowman that made his only appearance in "The Most Horrible X-Mas Ever", where he told a tale that had happened on Earth two million years ago when Zim he caused the "Most Horrible X-Mas Ever".


Mr. Sludgey's head close up, revealing the wires inside of his head.

Mr. Sludgey is a robotic snowman standing at the height of an average adult human. He is made of three large snowball-like shapes, like a normal snowman, has two black buttons with red centers nailed into the middle snowball.

Each snowball is made of two hemispheres held together by what appear to be staples. He does not have legs, and his arms are located at the bottom part of the middle snowball and wears brown gloves. His head is hollow, with several wires inside, and a unibrow. His eyes are black, along with a thin, carrot-shaped nose and a red rectangular tongue. He wears a black top hat that is larger in proportion the higher it goes and at the top, it begins to bend down, due to the size of the hat.


Mr. Sludgey tucking a child away.

Mr. Sludgey is very kind to children, and has a somewhat silly and whimsical demeanor. Though not one, he behaves like a regular human: He can smile and stick his tongue out, and make other gestures to indicate his emotions. He can speak in a very fluent and clear non-robotic voice. Mr. Sludgey is very kind to the children he looks after, and is also very knowledgeable.

However, he seems to have become slightly irritated when one of the children he was telling a story to criticized him, telling Sludgey that his story makes no sense whatsoever. In response, Mr. Sludgey blinked for several moments, picked up the child by the head, tucked the child away under a bed and continued his story.

Role in Invader Zim

Mr. Sludgey played a major role in the last episode aired for Invader Zim, "The Most Horrible X-Mas Ever". He told the future children of Earth a story about Zim, narrating the entire episode.

Facts of Doom

  • Mr. Sludgey was voiced by Fred Tatasciore.
  • Seeing as he is made to look like a snowman, it can be implied that Mr. Sludgy is only used on Christmas and is in storage for the rest of the year.
  • Mr. Sludgey is the first robot in the franchise to tell a story involving Zim, the second one being the Robo-Hobo in Issue 45.