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Character on Hey Arnold!
Occupation4th Grade Student
Father: Ray

Sid's mother

Best friendsHarold
RelationshipsRhonda Wellington Lloyd
Ruth P. McDougal
Voiced bySam Gifaldi (1996-2000)
Taylor Gifaldi (2001)
Aiden Lewandowski (2016)

Sidney "Sid" is a fictional character in the Hey Arnold! TV Series.

He is generally known to be very superstitious, stubborn, selfish, mean, timid, and paranoid, having once believed to have killed his school principal with a voodoo doll carved from soap, and at another time believing that Stinky was a vampire. There was even an occurrence in which he was obsessed with cleanliness after learning about germs in his classroom, so much so that he wore a special anti-germ suit and could barely sit inside his desk while wearing it. Sid is often given much grief for his paranoid tendencies.

Sid Promo Art

Promo art depicting Sid.

Sid is Gerald's "lead-in" man; when Gerald is about to tell another of the Urban Legends, Sid introduces him, usually mentioning how the story has been passed "from kid generation to kid generation".

For the most part, Sid hangs around with Harold and Stinky, and the trio are often the cause of trouble around P.S. 118 and the surrounding neighborhood. A few episodes are based around the trio and the consequences they or others must face because of their troublesome antics.


Sid's Appearance

Sid's Appearance

His most noticeable feature is his long nose, which seemingly protrudes from his forehead. He wears a green cap which covers part of his eyes, a pair of prized white Winklepicker Beatle boots, and a black jacket; he almost always wears this outfit.

In the episode "Monkeyman!", Sid was mugged by adolescent thieves who decided to steal his Beatle boots, although Monkeyman retrieved them at the end of the episode.

Sometimes, Sid has a "full" head of hair ("Heat", "Save The Tree", "Fishing Trip"), while other times, it's all stringy, like the hairs that stick out from under his hat ("Helga's Makeover", "Wheezin' Ed"), and occasionally (as in "Arnold's Room"), he has both.

In the comic "Gerald's Haircut", Sid's cap is colored teal, his jacket and undershirt is blue and lavender, he also has a yellowish skin tone.

In "Save The Tree", Sid is seen wearing his pajamas which include a yellow version of his usual hat.


  • Sid is loosely based on a cousin of Craig Bartlett's when they were young, who he thought was hilarious.
  • In the episode "Arnold's Room" we can see a photo of Rhonda lying on the floor of his room, implying that he may like her. Additionally, they were partners in "Wheezin' Ed" and he jumped in her arms when he was scared.
  • As seen in "Eugene's Birthday", Sid takes cooking classes.
  • He thoroughly enjoys catching frogs, and his pet frog Sidney, is actually the first frog he caught.
  • According to Arnold, he possesses progressively exceptional photography skills.
  • In Arnold's Room and The Journal it is shown that like Arnold, he had his hat since he was a baby.
  • In the pilot he is depicted with a bucktooth, his hair also appeared to be ginger (despite the stringy hair still being black), he wore yellow pants, his beatle boots were completely black and his hat was a pink-like color.

    Sid in the pilot next to Rhonda.

  • He has two pairs of swim trunks, one that is orange and another that is black.

Appears in


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