Elite Boom Guy
From the Super Mario Wiki
Elite Boom Guys are Shy Guys that are found in Gritzy Caves in Mario & Luigi: Partners in Time. Elite Boom Guys are stronger versions of Boom Guys. Additionally, they wear blue outfits and attack more quickly. When one of the Elite Boom Guys attempts to attack, the Elite Boom Guy first walks near to one of the Mario Bros. The Elite Boom Guy will either duck while holding his hands on his head or duck while the Elite Boom Guy extends his arm toward one of the Mario Brothers.
If the Elite Boom Guy attempts to duck while holding his hands on his head, the Elite Boom Guy launches a Bullet Bill from the Bill Blaster and attempts to hit one of the Mario Brothers. If the Elite Boom Guy attempts to duck while extending his arm toward to one of the Mario Bros., the Elite Boom Guy attempts to fake out the Mario Bros. with a puff of smoke and then launches out a Bullet Bill. The Mario Bros. can either jump on the Bullet Bills or jump over them. The Mario Bros. can get rid of the Bill Blaster. When this happens, the Elite Boom Guy becomes helpless until two Blue Fly Guys that answer his calls fly by and drop another Bill Blaster to the Elite Boom Guy's head. Elite Boom Guys are usually accompanied by Snifaros in battle. Elite Boom Guys take critical damage from fire but take only one damage from ice.
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