nonconformist; maverick; enfant terrible
Refers to a person who defies conventions or established norms in their field, often with a connotation of being radical or unconventional.
He is known as a maverick in the industry.
The writer was called an enfant terrible of the literary world.
Compound of 異端 (itan, 'heresy, heterodoxy') and 児 (ji, 'child, person'). The term literally means 'heretic child' and is used figuratively for a nonconformist.