<p>"GM" used to be the standard prefix used on the name of official characters of volunteer gamemasters as well as members of Tibia's Customer Support. Apart from the already mentioned <a rel="nofollow" href="https://www.tibia.com/community/?name=GM+Solkrin">GM Solkrin</a> (which has other "GM" characters GM characters such as <a rel="nofollow" href="https://www.tibia.com/community/?name=GM+Solkrin+on+Antica">GM Solkrin on Antica</a>), <a Antica</a>), Sidnia is another character with such prefix.</p>old member of the Customer Support with GM characters such as <a rel="nofollow" href="https://www.tibia.com/community/?name=GM+Sidnia+on+Harmonia">GM Sidnia on Harmonia</a> is Harmonia</a>. It's interesting that even members of the content team may still have characters with the GM prefix such as <a rel="nofollow" href="https://www.tibia.com/community/?name=GM+Lionet">GM Lionet.</a></p>