- Hey Arnold characters
- Nickelodeon Characters
- Black Haired Characters
- Red Characters
- Brown Characters
- Heroes
- Males
- Male Characters
- Boys
- Kids
- Male Heroes
- African American Characters
- Characters voiced by child actors
- Paramount Characters
- Sidekicks
- Excited Characters
- Pedro Cavalcante Alves Characters
- List of Pedro Cavalcante Alves's Characters Informations
- 1994 Introductions
- 1990s Characters
- Suspects
- Victims
- Deceased Characters
- 2000s Characters
- Nurses
- Coroners
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