Powerful
alien entity encountered by the
Enterprise in the
Star Trek episode "The Squire of Gothos". Trelane took the appearance of an early 19th-century
fop, spoke in an affected manner, and regarded his conflict with the ship's crew as a
game played for his
amusement.
James T. Kirk located and destroyed the source of Trelane's power and defeated him; in the end it was revealed that he was merely a child, and his even more powerful alien parents came and took him home.
He reappeared in the Star Trek: Next Generation novel Q-Squared, where we learned that Trelane was part of the Q Continuum.