Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
The Proving Ground is the area when appear and can be fought during their the Epic Bosses.
When the old epic boss time is out and it's going to appear a new epic boss, there will be a message which says that the Dark Prince is always recruiting new epic bosses and that new epic boss is on its way