Burt the Bashful is the first boss in the game Super Mario World 2: Yoshi's Island. He used to be a regular Burt until Kamek transformed him into Burt The Bashful. Burt The Bashful is a big Burt Bro that tries to defeat Yoshi by jumping on him. in Yoshi's Island DS, he is replaced by the Big Burt Bros. The level Burt The Bashful appears in Burt the Bashful's Fort.
Super Mario World 2: Yoshi's Island
In the battle, Burt bounces by jumping and Yoshi has to throw the eggs at Burt until defeated. After beimg defeated, Burt turns red and deflates like a balloon and disappears.
Yoshi's Woolly World