Doink the Clown is a gimmick used by several professional wrestlers since the 1990s. The Doink character originally wrestled in the World Wrestling Federation and now can be found occasionally on the independent wrestling circuit in the United States.

The Doink wrestling persona is that of a circus clown. He wrestles in a clown costume, complete with face paint, makeup, and bright green hair. His diminutive sidekick, Dink the Clown (who was approximately four feet tall) wore a similar clown suit.
Source : Wikipedia