>>536492087
ish/faust/greg/hong were confirmed to get the EGOs on a stream.
if you mean the operators the ego are based.
we dont know anything
just that the EGOs will infact be operators instead of monsters from arknights

>>534002664
because half the series is about being an idol girl.
the series was made back in the 2010s before Kpop made male idols popular.
if uma was made today they would 100% keep the genders of the horses accurate to real life