Ryo Akebono, a second-year Science student at Kamogawa Music College since moving to Tokyo, is the bassist for GYROAXIA. His personality is overwhelmingly laid-back, marked by a characteristically slow and drawn-out way of speaking. He consistently claims an extraterrestrial origin, stating he was banished from his home planet for the crime of "the inability to make people happy" and intends to remain on Earth until he succeeds in making someone happy.

Despite this eccentric demeanor, Akebono possesses rare genius-level musical talent, which facilitated his entry into GYROAXIA. Within the band, he demands high standards of musical precision, critiquing bandmates for imperfections like excessive tempo variations in basslines or sloppy phrasing. His perspective remains detached and otherworldly; he refers to audiences as "earthlings" and describes performances as delivering sound to them. He maintains a consistently calm and unhurried attitude in all situations, including post-performance evaluations.

Akebono stands 182 cm tall and weighs 72 kg. His birthday is June 25, placing him under the Cancer zodiac sign. He lists CalorieMate and Earth among his likes and reports no specific dislikes.