Ace Peterson is Mike Peterson's son, Mindy's nephew, Keisha's cousin, and a resident of East Los Angeles, California. He has experienced considerable difficulty in his short life thus far. His father is a de facto prisoner, and he is presumably once more in his aunt's care. As shown in the stinger to "T.R.A.C.K.S.", Ace is still Mike's primary focus, and his rescue in "Beginning of the End" rounds out his arc.