Guest host Ken Jeong welcomes actress Jenny Slate, actress Kristen Schaal, and zookeeper Rick Schwartz, plus Mariah Carey Christmas Takeover (Night 1).
| Name | Type | Role | |
|---|---|---|---|
| Mariah Carey | Guest Star | ||
| Rick Schwartz | Guest Star | ||
| Ken Jeong | Guest Star | ||
| Jenny Slate | Guest Star | ||
| Kristen Schaal | Guest Star |