ABC, which has one family comedy with a male lead on the air in Tim Allen’s Last Man Standing, is developing another multi-camera family half-hour centered on a guy played by a stand-up comedian. The network has bought Big Children, written/executive produced by Scott Marder (It’s Always Sunny In Philadelphia) and starring actor-comedian Rory Scovel (The Life And Times Of Tim). Produced by ABC Studios, it centers on a thirtysomething “only child” (Scovel) who must move home and parent his parents after they retire and revert to acting like children with too much time on their hands. Scovel is repped by CAA, which also reps Marder, Mosaic and Isaac Dunham.