Contrarioni

Contrarioni(あまのじゃく) is an Usurakage Class, Thunder-attribute Yo-Kai ranked B.

Origin
Contrarioni is based on the amanojaku (which is also its Japanese name); a small oni-like demon that instigates humans to act upon their darkest compulsions and turn to evil, and will always lie or state the opposite when interrogated. The name is used in common language to mean "contrarian, backwards, someone who just can't be honest with themselves".

Name Origin
Contrarioni is a portmanteau of contrary and oni.

In other languages

 * Japanese: あまのじゃく Amanojaku
 * Korean: 심술 도깨비 Simsul Dokkaebi