I am Rika Black delmo or known as black delmo G. She is a black delmo. They are evil female terrorists who serves rudolf Hagen and Neena Hagen. Rika has short light brown hair. Alongside her Black Delmo uniform. Rika was among the group of Black Delmo which attacked Aika and Gust in the underground parking lot, led by the Black Delmo Leader. Black Delmo J mange to hit Aika with a knee strike and stun her for Rika to immobilize Aika by grabbing her from the back, looking to allow the rest of the Delmos to attack the salvager freely, but the careless girl forgot her enemy was armed with an electric baton. In a swift movement, Aika took advantage of Rika's distraction and swiftly positioned the weapon against her head next to her right eye. Busy in her struggle with Aika, and with both hands occupied, the defenseless girl had barely time to realize what was happening before Aika gave her an electric discharge at her eye which sent her screaming in anguish. Rika then lost her grip on Aika, releasing her, and fell back, clearly dazzled and confused, still holding her face in shock, she can't see anything. She remains like this until Aika takes her out of her stupor by throwing a shrieking Naomi at her. The impact sends both girls crashing down to the floor, where they are left sprawled on the ground out cold, Rika lying on her side and Naomi face up, her legs wide spread. Curiously though, when we next see Rika, as Neena Hagen dissapointedly reviews her beaten soldiers, she is in a different position. She now lies flat on her chest, legs wide spread and cheeks blushed furiously, with a slightly open mouth.

Afterwards, Rika reappears during the unsuccessful attempt by the Delmo Corps to eliminate Aika during her vacation at Peroronka Island. She is seen drinking coffee at one table with Eri and Misaki and the hotel's restaurant, discreetly observing Aika and "Pierre Valimore" sitting at another table nearby.

After some time she is with Bianca golden delmo at the hotel to kill akia.