Eveline is the Head Crew Manager of the Pavonatti Theater Troupe, a world-famous theater company indefinitely stuck in the town of Heart. She joins the party under the guise of a flamboyant mercenary also hired by the town of Pendant to clear out Choka. In reality, her mercenary job is an assignment by the Great Pavonatti himself to advertise the Troupe so that they can continue being a traveling company.

Eveline has other ideas, believing that heroics alone will not serve as a good enough advertisement. While she may be a skilled engineer, she considers herself a Renaissance bug with skill in clarinet and writing. However, as the head of Crew, she never really had the chance to perform, much less material she's written herself. She hopes to both use the traveling opportunity as a chance to busk, and perhaps to hone her own play-writing. After all, everyone loves a good hero story.

Later on, it's revealed she has a more altruistic motivation for travel, and that's to make sure that the troupe has enough material and capital to keep going after Pavonatti's death, as she's one of the few people who knows that Pavonatti is losing his voice, not from overuse, but a collapsing respiratory system. While they both know he won't survive, the same can't be said for the company bearing his name. But she won't let her family fall.

As a bard, Eveline is a ranged DPS and surpasses both Valerie and Freeman in term of damage, though not Ham. However, to make up for this she has many buffs in the form of songs of various effects. She can also debuff with oiled arrows from her bow, or intentionally bad playing.