In the explosive hour long finale Baby Cakes wants a magical pet while Pony and Steve prove to each other that they love their respective crushes.
| Actor | Role |
|---|---|
| BBrad NeelySteve Smith/ Frank Smith/ Baby Cakes | Steve Smith/ Frank Smith/ Baby Cakes |
 Greta GerwigPony Merks | Pony Merks |
 Hulk HoganThe Dean | The Dean |
| JJason WaldenSammy Davis | Sammy Davis |
 Jeffrey TamborProfessor Cakes | Professor Cakes |
 Gary Anthony WilliamsGolden Bowl/ Dr. Jack Falgot | Golden Bowl/ Dr. Jack Falgot |
 Chelsea PerettiCrystal Peppers / Kim Buckett | Crystal Peppers / Kim Buckett |
 Hannibal BuressMatt Attack / DJ Don Jose | Matt Attack / DJ Don Jose |
 Kate McKinnonSunshine | Sunshine |
 Andy RichterAgent Green | Agent Green |
 Donald GloverTransfer Billy | Transfer Billy |
 Jason AlexanderHarold | Harold |
 James HongWise Old Monk | Wise Old Monk |
 Evan PetersClint | Clint |
 Rosa SalazarBarb | Barb |
 Cat PowerKeiko | Keiko |
| RRyan FlynnFlip-Flop/ Pemsy | Flip-Flop/ Pemsy |
 Dave Coulier(Various) | (Various) |
 Brooke Hogan(Various) | (Various) |