add user role in forum like "plugin author"

Hello,

This is a general plea for help. I'm trying to add something exactly like "Plugin Author" label from wordpress.org or similar to the various labels on this site eg: Staff, Member, No Longer Registered. These label are attached to the Avatar or close by. Many forums use this to identify the user as a representative of the company/organisation with an official capacity.

For the life of me I cannot find a easy way of doing it. Although I am thinking the Membership plugin you guys have may off it, it would be nice for a simple plugin that does this. The Membership plugin may add much more functionality than I need. I really only need one level of label eg: Staff

Any Suggestions?

Many Thanks

Leigh