In battle, Bloopurns can produce Bloopers that can attack either Mario or Luigi. One of them must use their hammer to knock the Bloopers back at them dealing damage. They can also produce Dreamcap Captain Rs and Dreamcap Rs to aid them in battle. Using Luiginary Attacks such as the Luiginary Ball or Luiginary Stack can get rid of the group quickly.
The Bloopurn's name is a pun of the words "Blooper" and "urn," an object where they are inside.