It's really just a hypothesis that Suckerpunch wanted to free Swirly but encounters the Clog, which he tried to defeat but failed because Suckerpunch didn't use a plunger at the time. Suckerpunch eventually declares "war" and battles the clog many times. After many attempts, he lost his limbs but learns of the Clog's weakness which are plungers, so using the help of someone, something, or magic, he eventually replaces his limbs with plungers to fight the Clog. However, he still fails due to not being used to using plungers as limbs. So, he trains in the room before the Clog encounter and becomes quite adapt to having plungers as limbs, eventually he encountered the player and decides to give a plunger to the player just to see if the player can defeat the Clog. Which the player did, and Swirly D escapes pressumeably with Suckerpunch.
I look forward to a second encounter with Suckerpunch.