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Sworms are black worms found in the outskirts of Beanbean Castle Town in the game Mario & Luigi: Superstar Saga. They have two methods of attack: burrowing into the ground and popping out beneath Mario or Luigi, or burrowing underground and popping up in front of Mario or Luigi to bite him. The former method can be countered by jumps, and the latter by Hammers. Sworms are often assisted by Sharpeas.
Fawful-like versions of Sworms appear in Mario & Luigi: Bowser's Inside Story, where they possess and command Chain Chomps to create Chain Chawfuls. These Sworms are green and order the Chain Chomp they're controling. The Sworms can be dislodged and eaten with Bowser's vacuum attack, thus freeing the Chain Chomp the Sworm was controlling.
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