Suika Ibuki

Her appearance. However, despite her childlike looks, she possesses a great deal of raw power. She loves to drink and is frequently seen drunk in fighting games; she claims to have been drinking sake for hundreds of years.

Suika possesses the typical personality traits of most oni: she values ​​strength and fair play, and despises dishonesty and cowardice. However, she is seemingly a bit less honest than a typical oni. Furthermore, she does not kidnap humans, which is considered the strongest bond of trust between oni and humans. Nevertheless, she is quite honest.

Although she is usually a carefree and cheerful oni, as one of the most powerful youkai in Gensokyo, she can be very observant.

Suika, beyond the abnormal strength of an oni, possesses superhuman strength. Aya Shameimaru, who has likely seen or heard of almost every youkai by now, once referred to Suika as "simply the most powerful youkai in Gensokyo." That's not to say there aren't others who might be nearly equal to her power, but she is still considered the strongest youkai in Aya's opinion. Of course, this may be because she is a tengu, who was once subservient to the oni. At the time, among the people Reimu Hakurei knew, she seemed to have the greatest superhuman strength, but she admits that Yuugi Hoshiguma might be (physically) stronger than her. She once exclaimed, "My army is the night parade of a hundred demons! No human or youkai can withstand the assembled oni!"

Suika's ability to manipulate "density" grants her the power to control the density of any given object; in short, assembly and dispersion. As the object's density increases, it heats up, and as it decreases, it turns into mist. During her spell cards and other attacks, she can also create smaller versions of herself and grow gigantic. She can also decrease the density of her own body to become mist, making her impossible to attack. By doing this throughout Gensokyo, she can effectively monitor everything that happens. She can also gather formless things, such as people's souls, which is what caused the incident in the first place. She has also affected the moon as reflected in the sky (the canopy) to make it explode, then take the falling fragments and turn them into mist as well, but the details of how are unknown. Youmu Konpaku, after striking her with one of his swords, commented that the sword itself reacted strangely.

With this power, she could gather the thoughts of people and youkai, causing the residents of Gensokyo to hold periodic celebrations. Furthermore, she could divide herself into smaller pieces and become a giant, and she could also disperse herself into the atmosphere. In addition, she could compress her attack and increase its power, and she was able to pull her opponent into something resembling a black hole, absorbing their energy. She could create rocks and health out of thin air, and the way she launched them was visible. It seemed she was capable of turning a mountain into sand with this power. During her mysterious attacks on Myouren Temple, she was able to knock out opponents with a single blow without being seen. She was also able to collect all the trash surrounding Hakurei Shrine in three seconds.

Suika has a gourd she calls the Ibuki Gourd, which has been soaked in the extract of a sake insect, allowing her to convert water into sake. To prevent it from overflowing, the gourd has a stopper, and she can't pour more than it can hold at once. Closing the gourd will cause it to refill immediately. This is because she takes the evaporated contents of countless ordinary gourds and converts them into alcohol inside the gourd.

Before appearing in Gensokyo, Suika lived in the Underworld. However, even before that, she apparently lived on Youkai Mountain as one of the four "Mountain Devas," along with Yuugi Hoshiguma, Kasen Ibaraki, and one other. Since oni were superior to the other inhabitants of the mountain, such as tengu and kappa, everyone still remembers her as someone to be respected.

Suika has two long, straight oni horns on her head, blonde hair decorated with ribbons. She wears a faded pale pink blouse, a long purple and pink skirt, and three chains attached to her belt. Her eyes are brown.

Suika and Yuugi Hoshiguma were two of the four mountain devas and are very good friends, though they hadn't seen each other for a long time before Underground Animism. Of course, their reunion back then wasn't in person; Suika spoke to Yuugi using Yukari's yin-yang spheres. Suika hopes the four of them can climb the mountain again someday. They have been seen together in the background in the Human Village.

Yukari Yakumo was friends with Suika before the oni went to the Underworld. It's unknown how or when they became friends. Yukari cares for Suika, as in her (hypothetical) story of Immaterial Power and Lost, she stops her because she's worried that people will find Suika, who won't be as forgiving as Yukari. Suika does favors for Yukari, such as rebuilding the Hakurei Shrine or playing along with her. The two play danmaku battles with each other, though it's been a while since their last one before Scarlet Weather Rhapsody. Yukari is with Suika at the Hakurei Shrine's New Year Festival.

Reimu Hakurei's honesty impressed the oni when they first met. Now, oni often visit the shrine. Reimu frequently asks Suika to collect the trash. Once, Suika even gave Reimu a sake bug so they could drink quality sake together (unfortunately, a series of events led to the bug getting lost). She has allied herself with Reimu to further Yukari's plan.

Miyoi Okunoda took possession of the Ibuki Pumpkin (without permission) so she could see the world outside Geidontei. Although Suika was aware of this, she initially didn't intervene to see what Miyoi would do. When Suika finally questioned her, they got along well and reached an agreement: Suika would let Miyoi stay in the Ibuki Pumpkin whenever she wanted, and in return, Miyoi would keep Geidontei open late when Suika passed by.

Their relationship is ambiguous, but given that Kasen tried to avoid Suika as much as possible, their connection shouldn't be superficial. Later, Suika learns about her from Yuugi, but decides not to dwell on it, as she's curious to know what Kasen is up to. When they finally meet face to face, they speak familiarly, and Suika understands Kasen's true intentions for hanging around the Hakurei Shrine.

It is eventually revealed that Kasen is the third of the four devas, which explains the familiarity between the two. How their relationship changed after the devas separated is unknown.