Main Characters Host 2 main appearances Host 2 main appearances Host 2 main appearances Host 1 main appearances Host 1 main appearances Host 1 main appearances Host 1 main appearances Host 1 main appearances Host 1 main appearances Host 1 main appearances Host 1 main appearances Host 1 main appearances Host 1 main appearances
Recurring Guest Characters Train 4 guest appearances Katharine McPhee 3 guest appearances Mary J. Blige 3 guest appearances Josh Groban 2 guest appearances Kane Brown 2 guest appearances Andy Grammer 2 guest appearances Jamie Foxx 2 guest appearances Ne-Yo 2 guest appearances Kelly Rowland 2 guest appearances Jillian Michaels 2 guest appearances Justin Bieber 2 guest appearances Gavin DeGraw 2 guest appearances Melissa Etheridge 2 guest appearances Reba McEntire 2 guest appearances Rene Russo 2 guest appearances John Legend 2 guest appearances David Foster 2 guest appearances Kelly Clarkson 1 guest appearances Kacey Musgraves 1 guest appearances Gwen Stefani 1 guest appearances ⇤ « 1 2 3 4 » ⇥