The Burt Bros. are two normal Burts who are magically transformed by Kamek into gigantic Burts during the events of Yoshi's Island DS. Yellow Yoshi has to beat the Burt Bros. to continue the Yoshi clan's journey to save Baby Luigi and the rest of the babies. Although giant-sized, the Burt Bros. act just like regular Burts. The two hop on top of each other, then jump off, hoping to stomp the Yellow Yoshi. During the battle, the Yoshi must attack the Burt Bros. while they are stacked on top of each other, hurting them both at the same time. After a few Yoshi Egg hits, the Burt Bros. are defeated in the same fashion as their larger relative, Burt the Bashful.
 Names in Other Languages
||Big Inflat Brothers. (Inflón is Burt the Bashful's Spanish name)
||"Bélixo Brothers" (Bélixo is Burt the Bashful's French name)
||"Xilebo Brothers" (Xilebo is Burt the Bashful's German name)