Kobeni Higashiyama (東山 コベニ Higashiyama Kobeni) was a Public Safety Devil Hunter who started as a new recruit working under Makima's experimental squad.

Kobeni is a petite young woman with short black hair. On her face are four moles, two under her left eye, one in the lower right side of her mouth and one on her left cheek. She normally wears a professional suit and she has two hair-clips.

At the newbie welcome party, she wore a hand-me-down dress from her older sister which was considered to be cute by a couple other devil hunters.

Despite being forced into a line of work that she hates by her family, Kobeni still cares about them as she sends her money to her brother to support him through college and chauffeurs her family around in her car.

Kobeni is shown to be nervous when hugged repeatedly by Himeno but tolerates her antics.

Kobeni is shown to enjoy alcohol, especially when it is paid for by someone else. Her hobby is to eat tasty things. She loves the flavor of ice-cream which she has only experienced three times in her life.