The "Girl of the Highest Heaven". Final boss of Touhou's Scarlet Weather Rhapsody and later a recurring playable character.
A spoiled celestial with the ability to manipulate land and weather. In SWR's storyline, Tenshi was bored with her life in the heavens, and decides to wreak havoc upon Gensokyo by creating freak weather patterns and causing an earthquake which leveled the Hakurei Shrine.
She carries a weapon called the Sword of Hisou, a tool which can be only used by celestials.
She is a formerly-human celestial. The official profile states that she was called Chiko (地子) at the time when she was human, and thus used to refer to her younger-self in fanworks.
Her notable nickname is "Tenko" (てんこ; an alternate reading of her name). Many fans portray her as a masochist, based on her dialogue in SWR demanding "punishment for her deeds", often landing her on the receiving end of other girls' wrath, especially the sadisticKazami Yuuka.
