Despair I think that bringing down the Lunar Emissary with making it feel bad would be a good way to defeat it.
Family. True friends and family are always there when you need them most, to support you when you are feeling sad, and make your happy times brighter.
Okay then. For Bodyguards I will say atomic bombs. No way a bodyguard can protect anyone from an atomic bomb.
Robot A bomb-defusing robot stays behind while everyone evacuates. Even if he fails, everyone's far away from the fallout.