He is one of the original characters and first appeared in Season 1 and made various appearances in all of the later seasons.
- 1b. Eugene's Bike (no lines)
- 2b. Field Trip
- 3b. Stoop Kid (no lines)
- 14b. Pigeon Man
- 18b. 24 Hours to Live
- 19b. Runaway Float (no lines)
- 30b. Ms. Perfect (no lines)
- 33a. Longest Monday (no lines)
- 39b. What's Opera, Arnold? (no lines)
- 52b. Cool Party (no lines)
- 58a. Helga's Show (no lines)
- 83a. Bag of Money / Principal Simmons (no lines on either episode)
- 84a. New Bully on the Block (no lines)
- Hey Arnold! The Movie (no lines)
- Hey Arnold! The Jungle Movie (no lines)
- Joey seems to have lost a permanent tooth, since there is a space in his mouth where a tooth once stood.
- Joey had red hair and lighter skin in the pilot.
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