avantgardista 

an individual who employs novel concepts, styles, or tekkers

my Montessori teacher said I’d never amount to anything in the Art World, and now look at what this avantgardista has achieved - his own exhibition in the fucking Guggenheim!

avantgardista by Robocourier April 29, 2022

Avantgardster 

A person that dresses in avant-garde fashions, and often blurs the line between style and strange.

That dude with the mirrorball pieces and glitter eyebrows is such an avantgardster.

Avantgardster by Nat Sel February 9, 2013