One variant of this glitch was encountered briefly in a weird sort of dream-like demiplane, and a group of PC's spent some time researching and learning things in a wizard's tower located in the Feywild belonging to another variant that was not encountered. They have also been mentioned or referred to by others.
Common elements for this glitch include calm aloofness, uncanny intelligence, and deep knowledge or wisdom. Additionally, there is some evidence that this was the first glitch, and that the variants of this entity have been active longer. Also, it has been hinted at that this glitch is closer to resolving their arc, with only a relative handful of variants remaining, with entangled multiversal event horizons collapsing down to an island of comparative stability around the few who remain.
All remaining variants of the Multiversal Glitch known as the Inevitable Arbiter bear the following signature magic items. Some of the previously extant variants carried a couple of other items, but they were lost to reality when their timelines collapsed.