Boone is an ex-NCR 1st Recon Sniper and town guard in Novac. His exceptional aim and hatred for the Legion make him a ruthless ally in the Mojave Wasteland.
Arcade on the other hand is more likely to use his mind as his primary weapon. Quick witted and intelligent, he has an independent streak despite his Enclave origins; even so, he’s still handy with a weapon when he needs to be for the right cause.
Cass is more in tune with the wasteland as it is and less how she’d like it to be. She’s a tough, no nonsense caravan runner looking to claw her way back from sad times and a run of bad luck, any way she can.