Nick Cannon, singer-songwriter
Robin Thicke, television and radio personality
Jenny McCarthy Wahlberg, actor and comedian
Ken Jeong and recording artist
Rita Ora all returned from the previous two seasons. Additionally, "Lucky Duck" was featured throughout the season as a non-contestant costume, similar to "Cluedle-Doo" (who was revealed as
Donnie Wahlberg) in the
fifth season. The first episode featured
Mario, who portrayed "Wasp" during the
previous season, as a special guest.
Shrek appears in the second episode.
Ernie Hudson and
Mckenna Grace, in a pre-recorded segment, appear as special guests during the fifth episode.
Casey Wilson appeared during the sixth episode as a guest panelist, substituting for Ora, who was unable to attend the recording.
Joey Fatone, who portrayed "Rabbit" in the
first season, appeared in a pre-recorded segment in the seventh episode.
Chris Kirkpatrick, who portrayed "Hummingbird" in the
eighth season, and
Omarion, who portrayed "Yeti" in the
fifth season, made guest appearances in the eighth episode.
Danielle Fishel appeared in the tenth episode as a special guest.
Donnie Wahlberg, who portrayed "Cluedle-Doo" in the
fifth season, appeared in the eleventh episode in a cameo appearance.
Boyz II Men,
Wayne Brady,
T-Pain,
Kandi Burruss, and
Jewel appeared in pre-recorded segments in the season finale. == Production ==