Almaz - I just looked up the name on Wikipedia, it means 'diamond' in Russian and was the name of a series of military space stations made by the Soviet Union - looks kind of like a guy from Summon Night 4. Except not really. Oh well, he's cute :) The heroine looks way too young though. :/

I think Mao is the most unique design so far. And you know 'jiiya' is a term for an old man, right? ;)