UnderGG is the Guild Mule.
The crew decided they wanted to try out having a Guild Mule.
The original Idea behind the mule was that the crew, all of three people at the time, was to jointly control the Mule to better help out the members of the Guild.
If you had problems, questions, or complaints you directed them to UnderGG. This way the guild crew could be fair and anonymous in there decisions. All crew members decided on everything already anyway, but that you can't blame the one you talked to if things didn't go your way. Also, that way, with three people to check it eas more likely your comments would be seen.
Now it is a bit unclear where and why the mule does what it does. But hopefully it can still help you!
Visit her and give some loven.