Arnold is sick and tired of everybody preforming their April Fool jokes on him (escpecially Helga), so he tries one of his own, but it backfires when it temporarily blinds Helga.
| Creator | Craig Bartlett |
|---|---|
| Actor | Spencer Klein, Francesca Marie Smith, Jamil Walker Smith |
| Country | United States of America |
| Production | Snee-Oosh Productions |
| Season 0(6 episode) |
|---|
| Season 1(38 episode) |
| Season 2(37 episode) |
| Season 3(38 episode) |
| Season 4(31 episode) |
| Season 5(42 episode) |
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