Mikami is a pretty, short girl. She has neck-length black hair styled in a bowl cut, and plum eyes. She is A cup. In the anime, her hair has a purple tint.
Mikami is a kind and gentle person. She also seems very serious about her job, be it as part of her unit, or as a narrator in the rank battles, and gets visibly annoyed with Tachikawa for not being serious.
"Kaho" is written with "歌" (song) and "歩" (work, progress). "Mikami" (三上,"Mikami"?) means "something bestowed from above" (from one's superior or a deity).
She likes tonkotsu ramen (pork bone broth ramen), daifuku (a type of rice cake with sweet filling), and manga.