well, there is holmes. but there is always a chance that a PC won't kill him. but keith it really stupid. parker has a gun in a ready to be used position. first keith resist arrest, knowing that parker has backup. then he bad mouthes parker.

is there anyone more stupid than keith in the game world?

Tomas is a pretty stupid character. He really shouldn't go around to strangers saying he possesses Sunset Sarsaparilla star bottle caps.