In combat he used a heavily customised magitech crossbow until relatively recently, when he acquired the photon accelerator. He now uses a heavily customised Ytaran magitech crossbow.
Personality-wise, Draven is the archetypal adventurer-scientist, often taking samples of strange phenomena to study later or taking diversions from missions to poke around old libraries. Whenever somebody has to fix a broken tram or negotiate with a giant warforged lumberjack, Draven's the man to turn to.
He's also a bit racist (speciest?) against non-humans, but he's getting better as he spends more time away from his human-dominated homeland.