Chagrians were an amphibious species of tall, horned humanoids with blue skin. They were distinguished by two fleshy head tentacles protruding from the back side of their skull, wrapping down over their shoulders and ending in brownish-tipped horns. They also sported another pair of horns, standing straight above their heads. Chagrians also had very long black forked tongues they would sometimes flicker in a gesture of authority.
The Chagrian Mas Amedda served as the Vice Chair of the Galactic Senate under both Supreme Chancellor Finis Valorum and his successor Sheev Palpatine, only to become his Grand Vizier following the inception of the Galactic Empire.