Aliens : P
Colony-creatures that are able to split their bodies into
multiple parts, each able to function on their own. The
Pandronians sent Ari bn Bem to the U.S.S. Enterprise
to see if the Federation were worthy enough to be of use to
A botanical, plant race inhabiting the planet Phylos. The Phylosians constructed many space vehicles and planned to bring an era of peace to the galaxy, but before they could leave their world, disease struck their planet and wiped out much of the population. They were cured by Terran scientist Dr. Starros Keniclius, who, coincidentally, wished the same as them, to institute an era of peace. The Phylosians began referring to Keniclius as "master" and accepted him as leader.
Episode Reference - "The Infinite Vulcan"
Aerial predators inhabiting the planet Phylos. Comprised of some of the same botanical features as the Phylosians, they were susceptible to Dr. McCoy's weed poison spray.
"The Infinite Vulcan"
An unknown race ventured to Questar M-17 millions of years ago in their massive pod-ship, but found an evil alien there. Rather than contaminate other worlds with a clearly destructive and malignant entity, they activated their self-destruct mechanism to try and protect the galaxy.
"Beyond the Farthest Star"
entity inhabiting a mysterious energy cloud near the Romulan
border. When the U.S.S. Enterprise passed through the
cloud, the Practical Joker somehow entered the ship's
computer and began to play practical jokes on the
crewmembers to amuse itself. With no concern for the crew's
welfare, it locked three crewmembers in the recreation room
and activated a winter wasteland program, attempting to
freeze them to death. It also tried to exact revenge on
three Romulan ships that had damaged the Enterprise
by humiliating them. Captain Kirk was able to discharge the
Practical Joker from the computer by passing the ship back
through the energy field. With the Joker off the
Enterprise, it soon took up residence in the Romulan