Given that as a half-mythic, the MC has been stated to have quite a lot of potential, more so than other half-mythics.
- Its why Nefari is so interested in him as a study subject.
- Its why Velle loves the taste of his mana and can herself being monogamous with him.
- Its partly why Vana was only able to cause a slight bout of dizziness when she tried to wipe his memory.
Now, we already know that the MC's mother is one of COME's top agents, especially in the second conversation with Vana, where she talks about her father also being a top agent. Combine that with how Nefari's experiment in the library revealed something powerful and it becomes clear that even as a half-mythic, the MC out-tiers many other full blooded mythics, just by the effect he has on them.
Unfortunately, this is all somewhat rendered moot by the fact that we really don't know too much about the world of Mythic Manor. We don't know how many mythic species there are, what the hierarchy is (is a ram demon above a dog mythic? Is a Phoenix considered a rare species? What are considered the apex mythics?) or a plethora of other questions.