The Uncanny Trio is a group of three superheroes from the Marvel Comics universe. The trio consists of the mutant siblings Cyclops, Jean Grey, and Storm. They are often referred to as the 'First Family' of the X-Men and have been featured in various comic book series, films, and television shows. The acronym ENS stands for 'Extraordinary Natural Strength, ' which is a power possessed by all three members of the Uncanny Trio.