Former UFC champion Anthony 'Rumble' Johnson has died. He was 38 years old. TMZ reports Johnson died over the weekend following an 'undisclosed illness.' The Bellator MMA promotion company, which he joined in 2021, shared the news of his death on Twitter: 'It is with great sadness we acknowledge the passing of Anthony 'Rumble' Johnson. The BELLATOR family is devastated by his untimely passing and we send our condolences to his family and friends during this difficult time.'