Thaddeus Gammelthorpe, better known as Curly is a character on Hey Arnold. He is one of the geeks at PS 118. He is one of the crazy geeks because of his behavior and how he is portrayed. Depending on the episode, he is either a bad kid or just neutral. He madly in love with Rhonda, which creeps her out, but she warms up to him sort of by the end of "Curly's Girl". He has a bowl shaped hair cut, a green and orange shirt, brown shorts and black shoes; he is mostly voiced by Adam Wylie.


He is a fourth grader who attends P.S. 118. He is in Arnold's class. Curly is most well known for his outlandish and bizarre behavior and freaking out to silly and trivial things (possible symptoms of psychosis or bipolar disorder). He is known as the "fourth grader most likely to snap".

Curly is one of the more prominent side characters, being subject to a few episodes. Curly is a psychopath and will stop at nothing to get his revenge when he feels he has been wronged. He once framed Eugene for pulling the fire alarm with an elaborate plan just because Eugene sharpened his pencil down to the eraser ("False Alarm"). Curly's most well known act occurred in the episode "Curly Snaps." Because of a mistake in Mr. Simmons' plans, Sid became ball monitor when Curly was supposed to. Because of this, Curly stole all of the schools
Curly wiht his eyes

Curly's eyes as revealed in "Curly's Girl"

kickballs and locked himself in Principal Wartz' office. He continuously made demands for soda and threw balls at students and staff from the window on top of the door. It wasn't until Arnold was able to calm him down, that the problem could be solved peacefully. Curly was then rightfully promised his ball monitor position for the week, but was sent to detention by Principal Wartz.

In "Ghost Bride" Curly is so outraged that he wasn't allowed to tell the story of the ghost bride that he dressed up in a wedding gown and came to the cemetery to try to scare the kids. On at least three occasions ("Ransom", "New Bully on the Block", and "April Fool's Day"), Curly can be seen dancing ballet, having taken lessons at Madame Bovary's ballet school. It is unclear whether or not Curly is an animal rights activist, or if he just decided to do something crazy when he freed the animals from the zoo in "Cool Party" (since in the same episode it's also said he bit the head off a chicken).

In the Kid Crusader series, he is one of the students of Cartoon Town Elementary School.


  • We reveal that most of his family wear glasses.
  • His eyes were seen in "Curly's Girl."
  • His actor, Adam Wylie voices David in "All Dogs Go to Heaven 2".


  • KC: False Alarm(Debut;upcoming)

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