Donald Jacob Hager Jr. is an American professional wrestler and former mixed martial artist. He is signed to All Elite Wrestling (AEW), where he performs under the ring name Jake Hager. He is best known for his tenure with the WWE, where he performed under the ring name Jack Swagger. As a mixed martial artist, he was signed to Bellator MMA and competed in the heavyweight division.

Lucha Underground was an American professional wrestling promotion founded in 2014 by United Artists Media Group. Partly owned by Lucha Libre AAA Worldwide (AAA), Lucha Underground also refers to its weekly television program, which featured characters portrayed by wrestlers from AAA and the American and Mexican independent circuits. The series originally aired in English on El Rey Network and in Spanish on UniMás.