|Item Drop||Syrup Jar – 9.68% (None - 0%)|
None – 0% (Shroom Bells - 32.26%)
It is a variant of a Hammer Bros. that has two dangerous spiked yo-yos, a 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.
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.
Yo Bros. are types of "Hammer Bros." and have two "yo-yos" mixed together "Yo Bro".