Whacko is a red Whacka with big teeth. He appears in Paper Mario: The Act of Illusiongi as a miniboss. Mario goes to a desert-like area in search for Illusiongi when Whacko appears. He is grumpy because Mario disturbed him when he was sleeping underground (either by walking around to much or Goombearl tattling about the location he's sleeping at). He gets more enraged when he finds out he has been hurting his species and decides to fight Mario.