The undercover celebrity singers from the series premiere episode take the stage for their second performances. Joel McHale joins as a guest panelist.

Guest panelist Joel McHale returns to help figure out who is behind the mask.

Flamingo, Leopard, Flower and Rottweiler perform.

Four more of the remaining celebrities - Thingamajig, Fox, Tree and Butterfly - take on their next round of dazzling performances.

Astronaut, Night Angel, T-Rex, Swan, and Rhino perform for guest judge Joel McHale and the rest of the panel in the Group C playoffs

Contestants return for the Group A playoffs and their second performances for their chance to progress in the competition.

The contestants return for the Group B playoffs and their second performances of the season.

The highly anticipated, first-ever Wildcard character enters the competition, when the members of Group "A" return to the stage for their second performances of the season.

The singers from "Group B" return to the stage in a special Thanksgiving-themed episode and the final wild card enters the competition. Joel McHale is back as a guest panelist to keep Ken in check.

Three new characters enter the competition and two are unmasked; guest panelists Leslie Jordan and Joel McHale.