Oni (Japanese: 見回り鬼,Mimawari Oni) are Yo-kai that first appeared in the Blasters mode of Yo-kai Watch 2 games.
Oni have roundish purple bodies with arms and single tails. They have single turquoise eyes accompanied by a dark purple marking surrounding it, and golden horns.
When alert, their eyes turn red.
If an Oni spots the player, they will draw the Big Boss Yo-kai towards the player's locations. When destroyed, they immediately stop calling the Big Boss Yo-kai. They will also shoot lasers at the player once they are spotted.