Unidentified alien criminal (CODE NAME "R")

This alien, is a criminal that fought DEUS agents K and R a year before the series, Ultraseven X.

Ultraseven X
Back in Agent R's days as a DEUS agent, he and K were sent to attack an alien criminal. The criminal fired at them forcing K to take cover, but R countered the alien's firing prowess with his, succesfully taking it down.

Trivia

 * Despite not having his alien species revealed, but its silhouetted appearence was seen possessed green fins from its body parts and even had a green colored hand. It can be persumed that the Tsuburaya crew used Ragon's suit to portray its appearence.

Powers and weapons

 * Gunslinger : This unnamed alien was seen prowess in its firing skills.