S2, E19: Working together on a mission, Liv, Detective Babineaux and Major crash Vaughn's (recurring guest star Steven Weber) Super Max Rager party, where singer Rob Thomas (Matchbox 20 — guest starring as himself) performs a song from his solo repertoire. Meanwhile, Blaine reaches out to Peyton (recurring guest star Aly Michalka) for help, which does not sit well with Ravi.