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Seriously, what's going on? Have you completely lost it, calling angels transvestites? Let me explain why I personally find the angel appealing. Take a look:
In foreign advertisements and movies, there's a certain stereotype of a kind doctor – a woman in a white coat, with short, light hair, a kind and caring person. The angel is drawn in a similar way. If in the third Heroes game, archangels looked more like attacking units (muscular, massive bodies, the Sword of Justice in their hands, strong wings), and in the fourth game they were somewhat vague, then in the fifth game, I think they resemble healers and resurrection units more. That's how it is =)