A person who is very avant gaurd. A trend setter. Someone who dresses differently than the rest. When making fun of fashion and trending, they can be compared to homeless people.
Did you see that avant knight?
Nah man that's just a hobo
He is so trendy!
He's an avant knight
Avant Hector is the best loving and caring kid you will ever find in your entire life.
Avant Hector
Hipsters who think they are cool, new and fresh, and have missed the irony in their retardedness.
The leading edge of edgy hipsters who have their heads so far up their arseholes with not an ounce of cool or self-awareness to allow them to realise that they are not in any way shape or form presenting anything new in their style, action, diction or modus operandi.
1) That guy, Don Atari, is so avant-garde. (adjective)
2) My sister is one of the avant-tarde. (noun)