MoniqCan confirm it too, i've also seen Great Najab today. He was wandering (west wall) from kami teleporter puddles to Gusty Gorge Workshop and back. In company with Death Najab.
C011V001_30927: can't be confirmed, I have found Great Najabs lvl 248 in LL
Update: They (Great Najabs) are slacking in band of at least of 2.