I use the console cheats to play this game, so I thought it was pretty funny when, presented with a cave of invisible night stalkers, i thought, wow, thats pretty scary, and challenging, i then thought screw it and sprayed machine gun grenade fire everywhere to kill everything, even if i didn't see it. Also, after posing with a unique mini gun on black mountain in third person mode, i saw a night kin uncloak and hit me when i was posing, very funny, also everything Raul says, and Raul's unique quest reward, I wont spoil it. And the terrifying presence perk, soo funny, especially when talking to Benny for the first time.
Also
Lily: Jacobstown (Top left of map) (Melee specialist)
Boone: NoVac (Sniper)
Raul: Black Mountain (Gunslinger and repairman)
Arcade: Mormon Fort (Free side) (Energy weapons and doctor)
Rex: Free side (Robo-dog)
ED-E: Prim (Enclave eyebot)
Veronica: Trading post 188 (Melee specialist, walking tool bench)
Cass: Mojave outpost (Bottom left) (Guns specialist and likes whiskey)
And those are all of the companions, enjoy.