A youkai with the ability to manipulate darkness. Despite her childlike appearance, she is a man-eating youkai. She is constantly surrounded by a magical darkness that light cannot penetrate. The red ribbon on her head is actually an amulet (seal) that she cannot remove herself.

A vampire with the ability to destroy anything and everything. She is Remilia's younger sister and has been confined to the basement of the Scarlet Devil Mansion for 495 years. Due to her emotional instability, her mental age remains childlike. She possesses distinctive, crooked wings lined with crystals.

A bakeneko youkai and the shikigami of Ran Yakumo, possessing the ability to use sorcery. She usually lives on the Youkai Mountain and exhibits cat-like traits, such as a weakness for silver vine. Her weakness is water; if she gets wet, her shikigami possession breaks, and she reverts to an ordinary bakeneko.

The former princess of the Lunar Capital, possessing the ability to manipulate eternity and the instantaneous. She is the Kaguya-hime from 'The Tale of the Bamboo Cutter' who drank the Hourai Elixir of immortality and was exiled to Earth. She currently lives in hiding at Eientei in the Bamboo Forest of Lost, where she continues a cycle of mutual killing with her nemesis, Fujiwara no Mokou.

The mistress of the Scarlet Devil Mansion and a vampire with the ability to manipulate fate. She is Flandre's older sister, a 'vampire girl' who has lived for over 500 years despite her youthful appearance. While she is proud and values dignity, she also has a childish side. She has large, bat-like demon wings on her back.

The true goddess of the Moriya Shrine, possessing the ability to create earthliness. She is the native god (curse god) of the kingdom of Moriya, characterized by her frog-themed hat and clothes. An ancestor of Sanae Kochiya, she moved to the Youkai Mountain in Gensokyo along with Kanako Yasaka, who went from being her rival to her friend.

The mistress of the Palace of the Earth Spirits and a satori youkai with the ability to read hearts. She is shunned by many youkai and humans because she reads their minds with her 'Third Eye' on her chest. In contrast, she is deeply loved by wordless vengeful spirits and her animal pets, such as Orin and Okuu.

The Head Maid of the Scarlet Devil Mansion, possessing the ability to manipulate time. She is the only human living in the mansion and is described as 'perfect and elegant,' handling both domestic chores and combat flawlessly. Her fighting style involves stopping time to throw a barrage of knives.

The younger sister of Satori Komeiji, possessing the ability to manipulate the unconscious. She was originally a satori youkai like her sister, but she closed her Third Eye after sensing the hatred others felt toward mind-readers. As a result, she lost her telepathy but gained the power of the 'unconscious,' allowing her to act without being perceived by anyone.