R5-P8 was an astromech droid member of the Weequay Hondo Ohnaka's pirate gang during the Clone Wars. He was not like normal astromechs, and had a blaster pistol mounted on his head.
Card Text/Abilities 
Once per round, after defending, you may roll 1 attack die. On a hit result, the attacker suffers 1 damage. On a critical hit result, you and the attacker each suffer 1 damage.