Unzan

Unzan is a character from Touhou who is Ichirin Kumoi's nyuudou partner. He is literally a gigantic, angry pink cloud with fists and a face, but ZUN describes him as a "gentle old man at heart." The two work together during the boss battles.

During the events of Undefined Fantastic Object, Ichirin and Unzan were acting as guards for Byakuren's ship, to keep out anyone trying to keep her from being revived. She initially thought the heroines were attempting to stop her, but upon realizing they had some parts of the treasure needed to unseal Byakuren, she assumed they were on her side and happily let them through.

Appearance
Unzan is a pink/reddish cloud with the face of an old man with a beard.

Relationships

 * Ichirin Kumoi (Controller)

Trivia

 * The characters for Unzan's name mean "Clouded Mountain" or "Mountain of Clouds".
 * A nyuudou cloud (入道雲) is a Japanese term for cumulonimbus cloud or thunderhead.
 * Unzan being purple is a reference to the purple cloud leading to where Myouren was.
 * In an interview with ZUN, he states that Ichirin isn't the only one that can hear Unzan. Rather, he's just shy and tends to whisper, so Ichirin repeats what he said to others "Like a spokesperson".