Who sings for Mike in Sing?

Everybody -- and every animal -- wants to be a star, or so it seems in the new musical animated feature Sing, about a koala desperate to keep his family's theater from shutting its doors. To save it, he holds an American Idol-type singing competition, which it seems every star in Hollywood wanted a part of. See who is voicing who by checking out our guide to the main characters and the actors behind their voices.

BUSTER MOON

An optimistic koala voiced by Matthew McConaughey, Buster Moon is the mastermind of a singing competition meant to save his family's old theater, as he's unable to bear the thought of it closing forever. He's "the ultimate creator," McConaughey says, "a showman who refuses to accept defeat and a guy who will accomplish the impossible through sheer force of will." 

ROSITA

She's a shy mother of 25 piglets and the wife of a workaholic, but Rosita the pig, voiced by Reese Witherspoon, always dreamed of being a real ham on stage. "It’s the love and passion Rosita’s given and received that pours out of her when she embraces her inner diva and lets loose," Witherspoon says. 

GUNTER

Rosita's dancing partner, a fellow pig named Gunter, is voiced by Nick Kroll. And he's totally fabulous despite having little talent. “Gunter knows what we all should: Everything is better in a gold track suit," Krolll says. "He is the yin to Rosita’s yang. If she’s hesitant, insecure and brilliantly talented… then Gunter is the one who’s first to hit the stage and shake his piggy patootie; he’s a legend in his own mind."

ASH 

A punk-rock porcupine voiced by Scarlett Johansson, Ash is a prickly teenager with a bad boyfriend. She finally realizes she deserves to stand out without him and become a badass solo act. "Ash eschews outdated expectations that she should deliver a pop-princess act on the stage and just rocks it out with original music," Johansson says. "I adore her."

MIKE

Seth MacFarlane voices Mike the mouse, a tiny character with a giant personality and voice. As a con man and a crooner, he's smooth in more ways than one, but he desperately needs the contest money. "What I like about this character is that he has zero concept of just how small he is," says MacFarlane. "Mike is a whirlwind mix of bravado, swagger and showmanship, and he genuinely believes he has nothing to prove."

MEENA

The opposite of Mike, Meena is big in size but initially quite small in voice. Former American Idol contestant Tori Kelly provides her singing talent in the role of the timid Indian elephant, who eventually breaks free from her stage fright. “I don’t know anyone who doesn’t have a bit of Meena inside," Kelly says. "As an artist, I went to that place of insecurity inside teenage Tori to find my inner Meena." 

JOHNNY 

Welsh actor Taron Egerton voices the Cockney gorilla Johnny, another character needing to break from expectations and show his stuff onstage. As the son of a criminal meant to follow in the family business, he has a lot to get off his chest, and a lot to blast out of his lungs. "He only needs Big Daddy to listen, to actually hear him, just once," Egerton says. "If that happens, Johnny believes he can become his own man and really soar."

EDDIE NOODLEMAN

John C. Reilly voices Eddie Noodleman, Buster's business partner and the grandson of a singing legend. He's a sheep, and true to his species is not nearly as confident, particularly about the fate of the theater.

The rest of the all-star cast includes Nick Offerman (Norman), Leslie Jones (Meena's mother) and Jennifer Saunders (Miss Nana Noodleman). Sing opens in theaters everywhere Wednesday, December 21.

Scarlett Johansson, Tori Kelly, Nick Kroll and Taron Egerton enter Matthew McConaughey's singing competition.

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