Another one of the "Salvaged Angels" that have been revived as part of Halcyon's machinations. Like Cheri, Ophelia is an Angel Core - a frighteningly powerful relic from ancient Caelestis - connected to a specially adapted Cyber-construct, which was then brought to life.
While Cheri's body is that of an "Exchikke", an extremely basic type of drone construct that the Cybers deploy en-masse, Ophelia's body is a modified version of a Krijyl; a massive, fearsome living generator with sparking conduits for arms. Ophelia thus has a vessel which is much better suited for containing and directing vast amounts of energy, allowing her to harness the power of her core much more easily and effectively; unlike Cheri, who is often at risk of self-destructing if she lets her full power shine.