| Name | Character | Episodes |
|---|---|---|
| Dana Snyder | Scratch (voice) | 5 |
| Marieve Herington | Tilly Green (voice) | 5 |
| Ashly Burch | Molly McGee (voice) | 4 |
| Chris Houghton | Cricket Green (voice) | 4 |
| Dan Povenmire | Heinz Doofenshmirtz (voice) | 3 |
| Lucy Heavens | Helen (voice) | 3 |
| Sarah-Nicole Robles | Luz Noceda (voice) | 2 |
| Adam McArthur | Marco Diaz (voice) | 2 |
| Mae Whitman | Amity Blight (voice) | 1 |
| Auliʻi Cravalho | Hailey Banks (voice) | 1 |
| Eden Sher | Star Butterfly (voice) | 1 |
| Myrna Velasco | Tater Ramirez Humphrey (voice) | 1 |
| Rhys Darby | Perry the Platypus (voice) | 1 |
| Manny Jacinto | Scott Denoga (voice) | 1 |
| Brenda Song | Anne Boonchuy (voice) | 1 |
| Kimiko Glenn | Kiff Chatterley (voice) | 1 |
| Zeno Robinson | Remy Remington (voice) | 1 |
| Matt Cornett | (voice) | 1 |
| Matt Cornett | Singer (voice) | 1 |
| Vincent Martella | Phineas Flynn (voice) | 1 |
| Amanda Leighton | Polly Plantar (voice) | 1 |
| Bill Farmer | Hop Pop (voice) | 1 |
| Haley Tju | Marcy Wu (voice) | 1 |
| Justin Felbinger | Sprig Plantar (voice) | 1 |
| Karen Malina White | Dijonay Jones (voice) | 1 |