Kaleesh

The Kaleesh were a species of red-skinned reptilian humanoids from the planet Kalee. They had two yellow eyes with slit pupils. Although all of their facial features were reminiscent of bats, such as their elongated ears and flat noses, the Kaleesh usually wore masks. They were digitigrades, walking on their toes rather than their entire feet, and they possessed a heart and lungs. General Grievous, despite his mostly cybernetic body, was a member of the Kaleesh species. Although he was in fact a Delphidian, Sidon Ithano wore a Kaleesh mask.