Character 2: He fled to The Fort, I shoot up the entire place with Boone, and let Benny go. (I'm not letting anyone just stay there, no matter what they've done.)
Character 3: Fled to The Fort, I got the chip from Caesar and left him in Caesar's tent (Didn't kill anyone on this playthrough)
Character 4: Confronted in his Suite, Veronica Powerfist-ed him while I was reloading my laser pistol, head exploded.
Character 5: Confronted in his Suite, .44 Magnum to the head
Character 6: Still deciding, just reached The Strip.