I am trying to find information on an older PC game. I can't remember the title at all, but I remember that the defining characteristic was that you played an angel who had no powers of its own, it could only possess people and use their bodies. I think the title started with an O...not a lot to go on, but maybe someone remembers?
More aboutgame title remember
I gave google a try but nothing with an O came up, well nothing useful came up at all. sorry.
I think this game you described was Messiah, you may have got the O from a game around the same time called Omikron: the Nomad Soul
Hope this helps
If the start screen had the flying nappy clad baby pushing the I of Shiny over so it fell on the armed bod, then it was Messiah.