Samus encounters three Skiffs when defending the Theronian bomb aimed at Elysia's Leviathan. The Skiffs attack the Spire Pod with their cannons, causing considerable damage to its structure. If the Spire is destroyed, Samus will die. They appear alongside Pirate Troopers, who will distract Samus from concentrating her fire on the Skiffs. They are very powerful, but share the weakness of the ATC; the front vent is vulnerable to weapons fire.