my oc is just a plane with a sentient avionics system. the lore is an xb-70 valkyrie got transported into the evangelion universe and crashed, so EVA-01's parts were used to revive it. as a result it got a new livery.
The lore of why microbes are humanoid in my series which is also one of my osmosis Jones theories, is that the cosmic background radiation levels became insanely high thus mutating all the microbes