Maverick

These lone wolves have an aura of mystery, bravado, and swagger.

Arms Dealer (Creature 2), Gunwitch (Creature 7), High Roller (Creature 11), Musketeer (Creature 3), Peerless Duelist (Creature 12), Political Upstart (Creature 0), Runaway Blueblood (Creature 3), Unsanctioned Sheriff (Creature 5)

Several of the NPCs elsewhere in NPC Core can fit well in this group: Bill-band (level 5), gambling companion (level 3), goblin get gang (level 5)

Multiple mavericks carry the explosive ranged weapons called firearms. Many of these NPCs can be adapted to other ranged weapons, such as crossbows or bows, with minimal changes if you choose not to include firearms in your game.