Pi'illoper is a Beanish character that wears Pi'illo mask.
Pi'illoper was mentioned several times by Popple who attempted to steal his treasure but couldn't find the way to the basement. Mario and the rest eventually finds him in the attic and was surprised to see Mario and the group with the five pieces of the Ultibed. Pi'illoper then takes the group down to his basement where he presents them with Bedsmith's pillow. Mario and Prince Dreambert then enter the Dream World where they eventually find and save Bedsmith. Mario and the rest then leave for Somnom Woods leaving Pi'illoper in shock and awe as he didn't know what had happened.
- Pi'illloper is the only significant Beanish character that didn't appear in Mario & Luigi: Superstar Saga or it's remake.