paradoxist

noun2

1. •
   (disapproving, old-fashioned) One who holds incorrect or eccentric beliefs; a bad scientist; a crank.

   • This was a noble achievement on the part of our paradoxist. At one stroke it established his theory of the weather, and promised to ensure him text-book immortality as one of the observers of Vulcan. — 1896
2. •
   A participant in the art movement of paradoxism.