Mordant was a monocle-wearing pig creature who worked for Rita Repulsa and Lord Zedd. When Ivan Ooze took over and imprisoned Rita and Zedd within a snow globe, Mordant and Goldar opted to serve him in lieu of sharing their fate.
Mordant only appears in Mighty Morphin Power Rangers: The Movie. In an early screenplay he is identified as Goldar's cousin and described as being a small, furry creature. However in the completed film he is a pig-like alien, and all referances to him being related to Goldar are lost.