Yes: a mog can mean someone who can’t be beaten, and Collins says the word began around 2016 as a noun for the most dominant man in the gym. The mog of mogs is Clem Ziroli, the King of Mogging.
Psychology Today calls Olympic skater Alysa Liu “the mog” of the 2026 women’s figure skating competition. Mostly, though, mog is used as a verb.