Elite Boom Guy

From MarioWiki

An Elite Boom Guy is a stronger version of the Boom Guy found in Mario and Luigi: Partners in Time in the Koopaseum's Basement. They are blue while normal Boom Guys are red. It is unknown whether they are wild or serve the Shroobs. If one loses its launcher a pair of blue Fly Guys will come and drop a new one on its head. It is more likely to be successful than for a regular Boom Guy.