Aljenna serves as a leader within the organization Chaos Choir and belongs to the Edel Raid race. She possesses vibrant pink hair typically adorned with a red ribbon and frequently cradles a rabbit doll. Despite her outwardly cute appearance, she initially displayed marked cruelty toward those provoking her anger.

In combat, Aljenna wielded a specialized cannon affixed to her right arm, firing Sting Raids as ammunition. She formed a Reaction bond with Ren alongside fellow Chaos Choir members Orfus and Jilltail. This Reaction shattered when Cou facilitated Ren's use of a forgotten song, severing their connection.

Following this event, Aljenna underwent significant reformation. She joined forces with Orfus and Jilltail, abandoning their antagonistic objectives to pursue peaceful relations with the Edel Raid protection group Arc Aile. This shift marked her transition from Chaos Choir leadership toward collaborative efforts aimed at reconciliation between humans and Edel Raids.