The "Avatar of Mountains and Lakes" (山坂と湖の権化).
Final boss of Touhou game number 10, Mountain of Faith. In canon appearance, she has short purple hair, wears a mirror on her chest, has a circular shimenawa floating behind her back. Her weapon is the onbashira.
She is the goddess of the Moriya Shrine after defeating Moriya Suwako a long time ago, her symbol is a snake as signified by the shimenawa, which she adopted to symbolize her victory over the frog-themed goddess Suwako. Some artists take the snake symbolism much further, such as depicting Kanako with slit pupils (as in the younger snake-eyed Kanako), a long and/or forked tongue, and even as a lamia. Her true power is dominion over wind and rain. Due to her estimated age and imposing appearance, she is jokingly a member of the Old Maids Alliance.
Person: short hair, purple hair, blue hair, bangs, red eyes
Outfit: red shirt, long sleeves, puffy short sleeves, short over long sleeves, skirt, long skirt, black skirt, brown skirt, red skirt, sandals
Accessories: shimenawa, shide, tassel, leaf hair ornament, autumn leaves, ankleband, mirror, onbashira