After Liv undergoes vocal surgery, she is unsure if she'll be able to sing again, so Karen and Maddie call in reinforcements to help; Parker and Val are surprised by their competition in the Mars Madness finals.
| Name | Type | Role | |
|---|---|---|---|
| Ron Hart | Writer | ||
| Jessica Marie Garcia | Guest Star | ||
| Carter Hastings | Guest Star | ||
| Chloe East | Guest Star | ||
| Jimmy Bellinger | Guest Star | ||
| Ego Nwodim | Guest Star | ||
| Victoria Moroles | Guest Star | ||
| Laura Bell Bundy | Guest Star | ||
| Jordan Fisher | Guest Star | ||
| Andy Fickman | Director | ||
| John D. Beck | Creator | ||
| Ron Hart | Creator |