Tubba Blubba's Heart, as his name implies, is the heart of Tubba Blubba, the third boss in Paper Mario. One day Tubba went to Bowser after Bowser stole the Star Rod and made him invincible in battle. And sealed Tubba's heart in the windmill. After Tubba reunites with his heart he becomes easier to defeat in battle. Tubba's heart has 50 HP.