Underground Sound - Lucha Underground recap for August 23, 2017

Sexy Star quickly beats Veneno in a Mask vs. Mask Match. Not long after the match begins, Joey Ryan shows up and rips Veneno's mask off, revealing him to be Cortez Castro. Both men brawl, but Joey Ryan hits Cortez Castro with a low blow and runs off with the Veneno mask.

Dario Cueto is in his office when Johnny Mundo shows up along with his agent, who says that Dario does not value his client after saving Lucha Underground from embarassment after taking the Lucha Underground title. Mundo says that last week was an embarassment, and that he can leave and take the gold wherever he wants. Dario Cueto tells them that the entire locker room is banned from ringside during the Lucha Underground Championship match, including the rest of The Worldwide Underground (Taya, "The Darewolf" PJ Black, PJ Evans, Ricky Mandel), saying that it would be unfair if the rest of The Worldwide Underground would be allowed to be at ringside. Johnny thinks not letting them be at ringside is unfair, but Dario says he does not need them and that he can do it on his own. Johnny Mundo says that if anything causes him to lose the title, he will run off with it, and the next time Dario sees the Lucha Underground Championship will be in another promotion. The agent says that it would be in Dario's best interesting if nothing stood in Mundo's way to becoming the undisputed king of lucha libre.

Prince Puma beats Pentagon Dark to win the Cueto Cup and earn a shot at the Lucha Underground Championship at Ultima Lucha Tres. Vampiro joins Puma in the ring after the match.

Dario Cueto awards Prince Puma with the Cueto Cup, and announces that Puma will face the Lucha Underground Champion at Ultima Lucha Tres. Whoever will be champion remains to be seen, as the match for the title is happening right now. Puma heads to Cueto's office.

Johnny Mundo retains the Lucha Underground Championship against Rey Mysterio Jr. During the match, Rey inadvertently launches Mundo into the referee, and Mundo kicks Rey in the groin. Mundo hits Rey with a Lumbar Check, then grabs the Lucha Underground Championship. He is about to hit Rey with the title when Rey's on, Dominic, gets on the apron and takes it from him. Dominic gets in the ring and hits Mundo with a double leg takedown, then security chases Dominic to the back. Rey hits the 619, and has the match won when Dario Cueto drags the referee out of the ring during the pinfall. Dario confronts Rey, then slaps him in the face. This earns Dario a 619. Afterwards, Mundo hits Rey in the back of the head with the Lucha Underground Championship before hitting End of the World to retain.