| Image | Character | Original name | Universe | Apperances |
|---|---|---|---|---|
| Arnold | Arnold | Hey Arnold! |
Hey Arnold!
|
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| Arnolds Bestemor | Arnolds Bestemor | Hey Arnold! |
Hey Arnold!
|
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| Ernie Potts | Ernie Potts | Hey Arnold! |
Hey Arnold!
|
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| Eugene Horowitz | Eugene Horowitz | Hey Arnold! |
Hey Arnold!
|
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| Gerald Johanssen | Gerald Johanssen | Hey Arnold! |
Hey Arnold!
|
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| Grandpa Phil | Grandpa Phil | Hey Arnold! |
Hey Arnold!
|
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| Harold Berman | Harold Berman | Hey Arnold! |
Hey Arnold!
|
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| Helga | Helga | Hey Arnold! |
Hey Arnold!
|
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| Line Heyerdahl | Line Heyerdahl | Hey Arnold! |
Hey Arnold!
|
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| Marty Green | Marty Green | Hey Arnold! |
Hey Arnold!
|
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| Miriam Pataki | Miriam Pataki | Hey Arnold! |
Hey Arnold!
|
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| Mr. Hyunh | Mr. Hyunh | Hey Arnold! |
Hey Arnold!
|
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| Olga Pataki | Olga Pataki | Hey Arnold! |
Hey Arnold!
|
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| Oskar Kokoshka | Oskar Kokoshka | Hey Arnold! |
Hey Arnold!
|
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| Rob Pataki | Rob Pataki | Hey Arnold! |
Hey Arnold!
|
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| Sheena | Sheena | Hey Arnold! |
Hey Arnold!
|
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| Sid | Sid | Hey Arnold! |
Hey Arnold!
|
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| Stinky Peterson | Stinky Peterson | Hey Arnold! |
Hey Arnold!
|