How do i insert an icon next to my name on a leaderboard?

I have seen shedletsky and lots of other people such as administrators or game admins have icons next to their name on a leaderboard how do i do it?

This is a ROBLOX CoreGui feature, mainly specially for admins. But there is a script that will replace the CoreGui and give you a badge if you so choose.

http://www.roblox.com/Custom-Player-List-Chat-Gui-BIG-UPDATE-item?id=133886770

This is a CoreGui feature. There are models in roblox that can make you have th badge, though.