The spokesman of the Phylosians, an intelligent plant species, who welcomes the Enterprise crew in 2269 and delivers Spock to their giant human master, Keniclius 5.
Agmar appears in the animated episode The Infinite Vulcan, written by Walter Koenig. When Sulu is poisoned by a mobile plant called a retlaw on the newly found planet Phylos, Agmar and his companions appear and cure him with ease.
Agmar explains that his people were almost wiped out by disease brought by a human who came to them generations ago. That human, Dr Stavos Keniclius, has survived as a series of clones. Agmar regards him as a saviour and helps to seize Spock, whom Keniclius wants as the model for an army of giant peacekeepers.
The Phylosians had once planned to impose peace on the galaxy with a fleet of their own, and Agmar still thinks the cause good. His voice was provided by James Doohan.