A Bio is just another way of saying Character Profile.
Bios come in a variety of forms, lengths and types. Every social networking platform, including RPWorlds, uses some type of bio as a means of identifying and distinguishing users. Some bios are only a couple sentences or even just a phrase or two long. Others can fill pages. Most, but not all, include an avatar or play-by and a link to a blog, Facebook Page or group website/community forum.
Every bio associated with a role play character should include some mention of being an RP account. If the character engages in adult situations, be it language, violence, drugs/drinking/smoking or nudity/sex that should also be noted and access should be age-restricted as much as possible.
Bios are also referred to as profiles.