
His weapon is a long staff, which he wields like a quarterstaff rather than a typical magician's wand. Mikleo is a mid-ranged fighter who wields Water-elemental artes. It is worth noting that he has a tendency to be annoyed by Edna often teasing him, with whom he trades minor insults. Mikleo also states that seeing humans and seraphim coexisting is not only Sorey's dream, but it becomes his as well. Mikleo shares an interest in ancient history with Sorey, and the two of them frequently engage in lengthy discussions and debates that exasperate the others. Hard working and determined, he constantly practices to make up for the fact that all of the other seraphim have decades to centuries of experience over him. He thinks of Sorey as both his rival and his best friend, and their other companions observe that he is much more likely to get fired up if Sorey is involved, with the implication that it is because of how much he cares for him. Because of this, they complement each other well. Mikleo is analytical and notably calmer than Sorey, thinking more before acting and quick to aid Sorey when necessary. In his future form, he has longer, curlier hair and sports a black undershirt and brown gloves, together with an altered version of his earlier clothing. His pants are white, apart from the ends, which are blue. Beneath his bangs, he wears a golden circlet with a green gem in the middle this formerly belonged to his mother, Muse. He wears a blue shirt and cape with white and gold embellishments. Mikleo has very light blue hair, almost silver, hiding a green gem surrounding a gold tiara-like symbol on his forehead, and lavender eyes.

Zenrus wanted to take them in to grow up as a Shepherd and his Sub Lord back in Elysia. She also found out that he was taking another child, a human, in and that he was Selene's child, Sorey. Muse then went running to Zenrus with Mikleo in her arms and asked if he could take him in to become a seraph. Muse begged him not to kill her child, but he did anyway. He was refashioned into a seraph when his uncle, Michael, killed him as a sacrifice for Maotelus. Mikleo was, in fact, not born as a seraph, but as a human.

