Suliban

The Suliban were a nomadic humanoid species with limited shapeshifting ability, who played a 22nd century role in the Temporal Cold War. ()

Harry Potter and the Return of James T. Kirk
In this alternate reality crossover, the Suliban joined forces with Voldemort and attacked the Federation during the 24th century.

Star Trek: Pioneer
In 2268, the Suliban attempted to destroy Deep Space Station K-7. Their plans were foiled by the crew of a 24th century Federation starship, USS, who found themselves accidentally transported back in time. ("Tribble Trouble")