individualist

noun3

1. •
   Someone who believes in individualism as a sociopolitical system.
2. •
   Someone who does as they wish, unconstrained by external influences.

   • Miró was too much of an individualist to simply subscribe to an aesthetic party platform of Mediterranean art, which wanted to move forward, but only at a safe trot. — 2006
3. •
   Someone who believes in the philosophy of individualism; a solipsist.