The season began with two groups of five, Group A and Group B. In a new twist, four wild card contestants entered the competition beginning with the third episode, replacing previously eliminated contestants. The contestants among the season have a combined, "26 Grammy nominations, nine multi-platinum singles, four Oscar nominations, three Super Bowl appearances, six gold medals and two world records among them". In addition, the opening scene for the season premiere revealed that cast has, "a combined net worth over $600 million, eight marriages, 25 gold and platinum records, 459 tattoos, over 55 million records sold, over 198 million followers, three Grammy wins, three Emmy nominations, one Oscar win, nine divorces, and 146 toes."
This season featured a non-contestant masked character called "Cluedle-Doo". Over the course of 10 episodes, Cluedle-Doo periodically disrupted the broadcast to provide additional clues to the audience from his secret studio, teasing the host and panelists, while challenging the audience to discover who he was. In the semi-final episode, he appeared in person to perform "Return of the Mack" by Mark Morrison for the panel, then challenged them to guess his identity. After the panelists made their guesses who he was, none of which was correct, he unmasked himself as singer , panelist Jenny McCarthy Wahlberg's husband, shocking McCarthy Wahlberg, who did not recognize his voice.