<P> Christina (Holly Robinson Peete) is Carl's girlfriend, beginning in Season 2 . She is a single mother with a young son, and works as an optometrist . When Carl runs away from her after learning about her kid, she lets Carl know that he's a coward and loser who isn't worth her time . However, she accepts his later explanation about never knowing his father, and they become a committed couple . She later becomes Molly's friend . As of Season 3, she has decided to try and reconcile with her ex-husband for the sake of their son, and breaks things off with Carl . After Christina makes several negative remarks about Carl during a conversation with Molly, Molly drops her as a friend . </P> <P> Brother Heywood (Reginald VelJohnson) is the preacher at Carl and Rosetta's church . It is strongly hinted (and later openly revealed) that he and Rosetta are in a sexual relationship . He officiated at Mike and Molly's wedding, after Molly was too honest with the priest at Mike's Catholic church and the two were forced to look elsewhere . </P> <P> Jack Biggs (Francis Guinan) is Mike's father, who left Mike and his mother many years ago to run off with a woman whom Peggy simply refers to as "the whore ." He first appears at Mike's bachelor party in Season 2 and tearfully apologizes to his son for running away, to which Mike honestly tells his father he loves him and is glad he will be at the wedding . After Peggy and he sleep together, he decides he wants to reconcile with her (his marriage to "the whore" is rapidly disintegrating) but Peggy bluntly says she only used him for sex and has zero interest in him now that he's served his purpose . </P> <P> Captain Patrick Murphy (Gerald McRaney) is Mike's boss on the Chicago Police force . Early in Season 3, he offers Mike courtside seats at a basketball game in exchange for Mike setting him up with Peggy . Soon after, Captain Murphy and Peggy begin dating . Peggy refers to him as "Paddy", though Mike doesn't dare call him that . </P>

Who plays mike's dad on mike and molly