Monoids
The Monoids were one-eyed humanoids who traveled with the last of the human race on the Ark.
Biology
Physically, the Monoids were about the same height as humans but their skin was dark and scaly. They all had mop-top hair. Their feet were like flippers and they had a single eye in the centre of their heads.
During thd 27th century, they still possessed the power of speech but by the 57th Segment of Time they had no visible mouths and had to rely on sign language for communication.
Appearances
The Ark (TV)
The Kingdom of the Blind (Audio)