One of the people robbed at gunpoint outside the UFC 224 host hotel in Brazil is a famous MMA manager, who tells TMZ Sports ... the robbers shoved their weapons right in their faces.
Very scary moment for Brian Butler-Au -- who manages big fighters like Max Holloway -- and is in Rio to support his fighter, Brian “BOOM” Kelleher, who's fighting on the main card at UFC 224.
Butler-Au says he was at a table on the beach with roughly 10 other people when the 3 men with guns rushed over and pulled out weapons.