Nathan “Big Poppa” McGillian (born January 29, 1997 ) competes as an amateur mixed martial artist in both Lightweight and Welterweight divisions. He trains out of Team Torres Martial Arts and has amassed an amateur record of 10‑7‑0, with his most recent fight being a TKO loss at the IMMAF 2024 World Championships in November 2024. He is active in regional and international amateur MMA competition.