Mike & Molly
The male lead. A police officer that meets Molly in an Overeaters Anonymous meeting.
The female lead.
The Flynn Family
The matriarch of the Flynn family.
Joyce's boyfriend, and later husband.
The Biggs Family
Peggy's beloved dog.
Mike's partner on the police force. Raised by his grandmother after his mother left, he's hesitant to find a place of his own, but does so after being kicked out of the house in Season 3.
A Senegalese immigrant that works as a waiter at Abe's, the diner that Mike and Carl frequent. He and Carl eventually become roommates. His real name is Babatunde, revealed when he becomes the new owner of Abe's.
An anxious man that befriends Mike and Molly at a baseball game. Motivated by their relationship, he starts attending Overeaters Anonymous.