Virtue is your best bet, my friend.
Virtue is said to be the unofficial RP server, and I have found this to be true myself. However, people sometimes say Champion too. I personally prefer Virtue, but, as usual, I would wait for other replies before you make your choice.
Virtue, mm, yes. Though it's a touch crowded these days.
Japancakes.
Art - Theme 005 - Seeking Solace
...That is just because we roleplayers r0X!!!
Thank you for the prompt reply! Does this apply to City of Heroes And City of Villains?
Indeed it does.
There are also roleplaying communities based on Champion (the Alliance of Champions and Champions United coalitions, the Legendaries, and others) and Pinnacle (the RP Congress) servers that I know of. Both of those are somewhat more insulated 'supergroup-based' communities than I've always understood the Virtue server community to be.
Virtue server has set gathering places around the city for characters to come and go and mingle as they please while the Alliance of Champions, for instance, is more focused on the roleplay of an actual alliance of several supergroups that relies on their secure Alliance communications system (coalition chat) to keep in touch.
I think with either of those choices you'll find that you're able to find a lot of roleplay regardless. I'd definitely encourage you to check us out if you're interested in trying out Champion server at all. The link to the Alliance of Champions forums is in my signature.
A friend and I have just purchased the game and we're -very- interested in roleplaying our characters, yet the server that we have chosen doesn't seem to have a high roleplay population. I was hoping that you all would be able to tell me which servers have a high number of roleplayers. Any assistance will be VERY welcomed.