Gaou

Gaou is the main villain in Wonderful Pretty Cure!. He was once the leader of a pack of wolves and now leads the Gaou-tachi.

[Spoiler] In the finale, he is revealed to be the ghost of Subaru, Gaou's human friend. Subaru seeks revenge against other humans for them killing his wolf pack – including Gaou – 100 years ago. [/Spoiler]