A person who is against the standards of ordinary society especially in dressing

One word substitute is Hippy.

Joker: a person who is fond of joking.
Hippy: a person of unconventional appearance, typically having long hair, associated with a subculture involving a rejection of conventional values and the taking of hallucinogenic drugs.
Scapegoat: a person who is blamed for the wrongdoings, mistakes, or faults of others, especially for reasons of expediency.
Butt: (of a person or animal) hit (someone or something) with the head or horns.