Mike as Metron

The Metron is a character who appears in the Star Trek review. In the end of that review, The Nerd spares a shitty game from getting destroyed, and then the Metron appears and tells him that he just demonstrated mercy. However, the Nerd replies "Mercy this, motherfucker!" before shooting him to death with his blaster.

The unnamed Metron was played by Mike Matei who also played a Klingon in the same episode.