Having made several concepts for characters on the Overwatch subreddit, I'll be using one of them.  Here they are:

[url=https://www.reddit.com/r/OverwatchHeroConcepts/comments/3si6f8/tank_concept_bahaya_construction_hero/]Bahaya, Indonesian construction worker turned hero[/url]

[url=https://www.reddit.com/r/OverwatchHeroConcepts/comments/3rb3qs/support_emissary/]Emissary, mysterious robotic drone[/url]

[url=https://www.reddit.com/r/OverwatchHeroConcepts/comments/3qxe1i/offense_concept_samson/]Samson, Israelite brawler replete with water[/url]

[url=https://www.reddit.com/r/OverwatchHeroConcepts/comments/3gnvak/hero_concept_philia/]Philia, American boomstick-toting bride[/url]

Make sure you get an idea of certain things the team would be asked to do should this RP come to pass.  Without a plan/plot in mind, RPs like this tend to die off quickly.