Along the lines of Stoker stats and close appearance ( gas mask) with enough differences to make him unique to stoker.
Primary Ability: Toxic gas grenade that does 20% damage to full health and prevents player heal (until death) and slows players by 20% for 10 seconds ( grenade active area same size and duration as stokers molotav)
Secondary Abiltiy: Ammo Station
Primary weapons: Rifles
Secondary: pistols
Melee : short knives