Shrowser

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Shrowser is a combination of Bowser and the spirit of the Elder Princess Shroob in the game Mario & Luigi: Partners in Time. He was created after Bowser ate the remains the Shroob princess. The Mario Bros. of past and present had to fight this new threat in Mushroom Castle. This fight is unique because, as Bowser says, you cannot attack. In order to defeat Shrowser, the player must Jump over or hit back 20 fireballs, 10 fire orbs, or some combination of the two (e.g. 12 fireballs and four fire orbs), which destroys the spirit of Princess Shroob, causing Bowser to lose his power.