Yo Bro

Yo Bro is an enemy in Mario & Luigi: Superstar Saga.

Appearance
It is another variant of Hammer Bros. in with two dangerous spike yo-yos, red yo-yo and a green yo-yo. They wear a purple bucket-like hat, green skin, yellow long sleeve shirt, pants and a gold vest.

Battle
In the battle, they are healed with Mario's Firebrand and critically attacked with Luigi's Thunderhand. When it is their turn to attack, they bounce the red or the green yo-yo and at the second bounce, Mario or Luigi should jump.

Possible etymology
Yo Bros. are types of "Hammer Bros." and have two "yo-yos" mixed together "Yo Bro".