What is first appearance gambit?

Gambit first appeared in the Marvel Comics series "Uncanny X-Men" #266, which was published in August 1990. He was created by writer Chris Claremont and artist Jim Lee. His first appearance featured him in a small role as a thief hired by the villainous Mr. Sinister to steal a genetic sample from the X-Men's leader, Cyclops. However, Gambit's popularity quickly grew, and he soon became a regular member of the X-Men, known for his charming personality, his card-throwing abilities, and his complicated backstory as a former member of the Thieves Guild in New Orleans.