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Aika Sumeragi (皇藍華) the eponymous heroine of the AIKa franchise. Aika is a woman with blue eyes, brown hair in a folded ponytail, red lips and blue earrings. Her main outfit consists of a long sleeve red jacket with a detached collar, a red skirt, and red high heels. When she transforms into Shivie Aika she has long blue hair, dark skin, white high heels, and the ultranate metal molds into a white bra and white panties.
During the events of AIKa R-16, Aika has shorter hair with a single braid. Her main outfit consists of a long sleeved red dress with a white shirt, a black necktie, white thighhighs, and red high heel boots.
During the events of AIKa ZERO, Aika has short hair without any ornaments. Her main outfit consists of a long sleeved red jacket with a white shirt, a blue necktie, black skirt, and black high heels.
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