A boss from the Paper Mario series, appearing in the chapter 3 of Paper Mario 64. He is a giant blue Spike who is a follower of Bowser that was made invicible by him from having his heart removed. He later starts devouring all of the Boos in Boo's Mansion, leading Lady Bow to request Mario's assistance in defeating him.
Despite his appearance, Tubba Blubba is actually very sensitive and cowardly. He is nicknamed "The Invicible Tubba Blubba", although he does have a weak point, which is his heart. Mario can only damage him by attacking his heart before it eventually rejoins with his body, which physically weakens him.
