In an Ensembles show, especially of the fighting kind, there needs to be someone to hold this Ragtag Bunch of Misfits together before they kill each other or wander off into the woods like so many Player Characters. Almost always a female, Team Mom basically acts as the mother figure for everyone else in the group, regardless of age or family relations. That said, the Overprotective Dad or older brother can qualify for Team Mom, and the same goes for a Cool Big Sis who grows Older and Wiser. In many cases, she actually is a mother or older sister to at least one other character.