There have been fighters in the UFC who have not only transitioned to different weight zones but also won titles across them. BJ “The Prodigy” Penn (16-11-2) is one of the only three fighters to spread his talent and win titles across multiple weight divisions. He went from his debut at Middleweight, to Welterweight (UFC Title), to Lightweight (UFC Title), and for the last three years he has fought as a Featherweight.
The first fighter to start off the will and the want to become a multiple weight division title holder was UFC fighter Randy “The Natural” Couture (19-11-0). He took home the heavyweight title in 1997, light heavyweight title in 2003.
The third UFC practitioner to join this elite club is, of course, the Irish Conor “The Notorious” McGregor (21-3-0). He is the first to hold titles in two division simultaneously, featherweight and lightweight. He has also moved to the welterweight division in 2016. Who knows, maybe he can set the record for holding titles across all three weight divisions.
Kenny “Kenflo” Florian (14-6-0), also crossed four weight divisions over his MMA career. Vitor Belfort (26-13-0) fought in the middleweight, light heavyweight and heavy weight divisions in UFC. Anthony Johnson started out as a welterweight, moving up to middle and making big noise at light heavyweight.