Underground Sound - Lucha Underground recap for June 21, 2017

Fenix meets with ring announcer Melissa Santos in a parking lot. He tells her he will win the Cueto Cup for her. Meanwhile, Marty "The Moth" Martinez is seen watching Fenix and Melissa Santos from afar, and it appears that the sight of them together has made him so mad that he butts his head through a small window pane.

Cage beats Vinny Massaro to continue to the second round of the Cueto Cup Tournament after Vinny tries to use his gauntlet mid-match. After the match, Cage puts the gauntlet on and busts Vinny open with a couple of punches to the forehead before choke slamming him from the apron to the outside.

We see narrated footage of Rey Mysterio Jr. training in Boyle Heights. He says the man makes the mask, not the other way around, and that he has nothing to hide behind the mask and that he is not afraid of a fight.

Meanwhile, we see narrated footage of Johnny Mundo taking shots from a kendo stick as well as training with one while Taya captures it all on a camcorder. He says he was always the best, and that he will always has doubters. While Rey Mysterio Jr. is universally known, Mundo says he will go down like the rest and he will be known as the best.

Marty "the Moth" Martinez beats Saltador to continue to the second round of the Cueto Cup Tournament.

Mascarita Sagrada is working out in the locker room when he is met by Paul London and Mala Suerte. Thinking Mascarita Sagrada is "the great rabbit king," London and Mala Suerte want him to lead The White Rabbit Clan to Valhalla and want to serve him. Mascarita Sagrada walks away, but Paul London tells Mala Suerte that he is "divinity personified."

Marty "The Moth" Martinez looks at his shrine to Melissa Santos, and pulls another picture of her out of his trunks. It becomes obvious that Marty is obsessed with her as he puts the picture of her on the wall, saying he could never be mad at her. He then opens a box, and inside is a hand mirror. As Marty smells the hand mirror, which contains some strands of Melissa's hair, He then sees Mariposa's face in the mirror, and before Marty turns around, she asks him if he remembers what her father taught them: "family first." Marty says he remembers. Mariposa says his lust for Santos has made him weak, and when she beats Fenix, it will be the both of them in the next round, and she will hurt him. Marty then asks if she remembers when he used to play. Mariposa slaps Marty, who smiles in response. Marty then takes the picture and says "Don't worry. I'll just have to make you part of the family, too."

Pindar beats Mascarita Sagrada to continue to the second round of the Cueto Cup Tournament.

Fenix beats Mariposa to continue to the second round of the Cueto Cup Tournament. After the match, Marty "The Moth" Martinez charges the ring and attacks Fenix, and ring announcer Melissa Santos shows concern and yells at Marty to stop. Fenix knocks Marty out of the ring, and when Mariposa rushes at Fenix, he sends her over the top rope before getting both of them with a suicide drive. Melissa is relieved.