Blue delmo V is a Blue Delmo member. Blue Delmo V has short dark navy blue hair. She is always seen in her Blue Delmo uniform. She is also seen posing herself in her bra and panties in Trial 5 end credits. Blue Delmo V was first seen during Trial 2 as one of Blue Delmo group who tried to chase after Aika Sumeragi and Gust Turbulence as they try to escape out of Hagen's ship. She was also one of Blue Delmos who tried to attack Shivie Aika on the deck of Hagen's ship even though her metallic tentacles deflected their rifle bullets. As Blue Delmos witness Aika transformation, she unleash her metallic tentacles and use it to whip the Blue Delmos. She was whip by the shoulder and get knock back down. Luckily for Blue Delmo V is strong enough to get back up to surround Aika and Gust.

During the events of Trial 4, Blue Delmo V was part of the Blue Delmo group which captured Maypia and Gozo Aida during their attempt to infiltrate Hagen's ship.

She then proceeded to escort them together with her comrades, presumably to some kind of detention cell. However, they never made it there, as halfway during the journey, the bombs planted by Gust Turbulence exploded, destabilizing the ship. Shocked, the Blue Delmos struggled to keep balance and during those brief moments of distraction, Maypia and Gozo took the upper hand and knocked them out. Blue Delmo V was the first one to fall, being left out of combat with a devastating blow to the neck from Gozo, just as she was pondering what could the source of the explosions be.