Orlen was one of Frieza's henchmen who was the same race as Apool. Orlen is the one who found the Namekian village that Vegeta had attacked for its Dragon Ball. He interrogated the sole survivor, and once he learned it was Vegeta’s doing Orlen killed the dying Namekian and returned to Frieza’s ship to report. He let it slip he killed the survivor without first asking where Vegeta may have hidden the Dragon Ball, which angered Frieza. He then killed Orlen without a second thought, zapping him with ki beams from his eyes.
Orlen was a strictly anime-only character. In the manga, it is Apool who found the destroyed Namekian village and he was not killed by Frieza.