Pirate Captain

Assassin

Cutthroat - Does 3 damage to an opponent monster this turn; if this attack doesn't kill the monster, the monster loses one turn.
Quickdraw - Does 1 damage to three opponent monsters this turn or 1 damage to a single target for 3 consecutive turns; can be used for a max of up to three consecutive turns and all damage is cumulative.

Note: "Target" can be a monster, player, or any item that can take damage

Spineback Turtle

Healer

Leatherback Antidote - Heals one monster suffering damage from a magic or poison attack.
Spineback Serum - Heals all monsters dealt attack damage this turn.

Crustacean King

Damage Dealer

Toxic Tail (melee attack) - Deals 2 damage to 1 monster this turn; monster is stunned and loses a turn.
Poison Pincers (magic attack) - Deals 1 damage to 2 different opponent monsters each turn until they die or are healed.

Sabre Shark

Tank

Distributor from the Deep - Takes all damage dealt that would be dealt to one monster this turn and redistributes it among any number of opponent monsters. Sabre Shark also suffers the damage.
Predator Blast - Takes all damage that would be dealt to player and monsters this turn and blasts it back to the opponent with the most monsters distributing the damage equally among them. Sabre Shark suffers 50% of the damage.