This family-friendly animated superhero romp is a spinoff of the 2023 holiday movie “Merry Little Batman,” in which Bruce Wayne’s young son, Damian (Yonas Kibreab), wore his own costume to be a miniature version of the Dark Knight. The series brings back the voice cast from the film — including Luke Wilson as Batman and James Cromwell as the Waynes’s butler, Alfred — along with the same exaggerated visual design and hyperactive pace. As much a domestic sitcom as it is an action-adventure, “Bat-Fam” integrates splashy supervillain fight scenes into more down-to-earth stories about a loving family of do-gooders, hanging out together in a massive mansion.