Arcona are slim-framed reptilian humanoids with clawed hands and feet. They have compound eyes which are large, green and luminous, but provide poor eyesight. Native ammonia breathers, they can survive without breathing assistance, but must take ammonia supplements when away from their homeworld. The gain bonuses to Charm and Negotiation attempts and begin with increased Vigilance. They also resist hot and arid conditions. They can be found in the Far Horizons rulebook.