Suika Ibuki is an oni capable of manipulating density who loves drinking and fighting with enough physical strength to throw large boulders single-handedly. Suika was one of the Big Four of the Mountain who lived on Youkai Mountain before the creation of the barrier surrounded Gensokyo. She and many oni then went to live in Hell, before it became Former Hell, until going back to live up on the surface after a long time. She frequently hangs around the Hakurei Shrine, much to Reimu dismay.