From the Super Mario Wiki
Hoo is the second boss of Super Princess Peach, residing in Hoo's Wood. It attacks by throwing eggs at Princess Peach, which hatch into baby owls. It then swoops down at Peach, who can then jump on its head. Jumping on it three times causes it to start using the Joy Vibe, which leads to it throwing a bunch of eggs at the platform Peach is standing on and breaking it, sending her falling to the ground with Hoo flying after her. Hoo must be hit on the head twice, though the only way for Peach to go above it is while using her own Joy Vibe, which lets her hover above it. However, Hoo shields itself while Peach is using the vibe, requiring her to to deactivate it while above it. After being defeated, Hoo summons a whirlwind and disappear.
Names in other languages
|From mori, forest.
||A genus of owls
||Portmanteau of "gufo" (owl) and "boss"