Train (form)

The Yoshi Train was a form a Yoshi could become in Super Mario World 2: Yoshi's Island by touching a Morph Bubble.

It allowed the Yoshis to walk on the wall (while in train form) however the train couldn't just walk anywhere, it had to stay on the traintrack. White Shy Guy enemies painted on the walls came to live to attack the train.

The train form reappears in Yoshi's Island DS.