not sure if they are still around, but back when Goldendeeds deticated was up, me and my brother ran into two griefers that are the type that build up trust, then, when they know they are not being watched, destroyed a building that an op made(pretty dumb, but then most griefers are...).
their names were as follows:
he was extremely nice, but also very dumb, me and my brother watched him grief our mansion we made, and he saw us, yet still continued to grief, even though he knew we were both ops...
pretty much same situation as reptar, except it was zeik's building (i think that was how u spelled zeik's name, if that was his name...).
funniest part was wen he started helping to fix it, then destroyed it again lol