House Partay, although looking like a wall when viewed from the side, actually takes the appearance of a cartoon house. His rooftop is red with a brown chimney and a party hat on top. He has sky blue eyes and a beady red nose. Also, he wears a tiny red bow tie and he has colorful balloons attached to his back.
When someone is inspirited by this Yo-kai, they will party harder than usual.
House Partay is rowdy and energetic. He is always up for big parties.
House Partay first appeared in Yo-kai House Partay, where he made Nate's friends Eddie and Bear bring all of the boys in class to Nate's house. Nate says it was supposed to be a small party, but then Katie brings in all of girls. Then they start to party at the level House Partay calls a disgrace.
Once Nate unveils him he says that he cannot leave until his party meter to one-hundred percent. Nate decides to summon a whole arsenal of Yo-kai to create some fun in the party such as ordering Dummkap to inspirit the male guests swing buckets and balance brooms on their head even though it only raises the party meter to twenty percent.
Nate summons Dazzabel to make all the girls wear fancy clothing. This raises the meter to 50%, or halfway. The house Yo-kai tells Nate to “get into the groove”. Nate then summons Rockabelly to make them belly dance and Wiglin, Steppa, and Rhyth. Then Nate summons a whole bunch of Yo-kai and then the KappaCrew that raps. They slowly filled the meter and then House Partay thanks Nate for having fun at the party he put together, by giving him his Yo-kai Medal. It was until Nate’s mom comes to angrily witness the trash as she said “a small party.“
He reappears in EP115, where he, Peppillon and Elder Bloom try to make Ashley happy, along with some help from Nate, Bear and Eddie.