From the Super Mario Wiki
Bunmawashi Dolls are enemies that only appear in Yoshi's Crafted World. They are yarn, clown-like dolls that try to attack Yoshi with an axe. They only appear in the level Be Afraid of the Dark, where they are the most prominent enemy. They constantly walk around with drooping hands, occasionally looking around if Yoshi is near them. When the Bunmawashi Doll spots Yoshi, it will screech and then run into him, trying to chop him with its axe. They cannot be defeated by any means; however, they are affected by the light, which will stun them for a few seconds. They can also unintentionally help Yoshi by breaking crates.