Glowing Baby Yoshi

A Glowing Baby Yoshi, also known as Bulb Baby Yoshi , is a yellow Baby Yoshi appearing in New Super Mario Bros. U. It has the ability to light up dark areas by pressing the button on the  or by shaking the. The amount of light shone increases the more the player shakes. Glowing Baby Yoshis also have the ability to stun enemies with the bright light. They emit glows even in his dullest light and add a chorus to the current music, but only when carried. They are capable of eating Boos and other enemies.

Glowing Baby Yoshi is very similar to a Light Block from New Super Mario Bros. Wii, as both illuminate dark places when carried. Additionally, Baby Bulb Yoshis' overall appearance resemble Bulb Yoshi, from Super Mario Galaxy 2.

This is the only Baby Yoshi that cannot be found on the World Map, and therefore, cannot be taken into other levels. In addition, its light-based abilities are only functional in dark areas, making this Baby Yoshi less useful if used in normal levels. However, if the players carry one to the goal, the Glowing Baby Yoshi gives an extra life as reward and remain behind the fortress, unlike the other Baby Yoshis that remain in front of the building and then follow the characters when they enter.

Reference
Glitzer-Baby-Yoshi Baby Yoshi Luccichino