Mike Weitz is a character portrayed by Ryan Alosio in the ABC crime series Castle. Mike is the best man at the wedding which forms the epicentre of "A Rose for Everafter", who, even when the roofies wear off, is completely confused, because what man has to be roofied? All a girl needs to do is ask. In this perspective he is supported by Castle , although at the time he is being questioned by Beckett, as the woman who drugged him has since turned up dead.