He is a recurring background character who usually only has one or two lines whenever he speaks. Almost nothing is known about him as he was only prominent enough to have lines during the first three seasons, though it is revealed in "Longest Monday" that he runs a "sanctuary" where fourth-graders can be safe from fifth-graders.
- 1. Downtown as Fruits / Eugene's Bike
- 3b. Stoop Kid
- 4a. Helga's Makeover (no cues)
- 8a. The List
- 11b. Cool Jerk
- 24b. Teachers' Strike (no cues)
- 27b. Harold's Kitty (no cues)
- 33a. Longest Monday
- 39b. What's Opera, Arnold? (no cues)
- 42a. Curly Snaps (no cues)
- 45a. Helga Blabs It All (no cues)
- 49b. Hey Harold! (no cues)
- 52b. Cool Party
- 54b. Road Trip (no cues)
- 57. Girl Trouble / School Dance (no cues)
- 69a. It Girl (no cues)
- 84a. New Bully on the Block (no cues)
- 91a. Harold vs. Patty (no cues)
- 92b. Curly's Girl
- 94a. Phoebe's Little Problem (no cues)
- Hey Arnold! The Movie (no cues)
- 98. April Fool's Day (no cues)
- Hey Arnold! The Jungle Movie (no cues)
- It is highly possible that Park is Korean-American. This can be inferred by the fact that most English-speaking Americans cannot usually pronounce Korean first names, instead referring to the person by their last name.
- It is revealed in "Cool Party" that Rhonda considers Park one of the "cool" kids.
- Park lives across the street from Stoop Kid, and he can be seen taking out his trash in the episode of the same name.
- Park's voice actor, Marcus Toji, was shown to have been with the cast up to Season 4, even though the last episode in which he voiced Park was "Cool Party".
- Park spoke in "Curly's Girl" when he bumps into Rhonda, but his voice actor was uncredited. It's very likely the sound he made was stock, or reused.
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