These are rare multi-spawn from a dead orcs corpse when you kill one. I have only seen them about 4x and we've done alotta grinding in GMM.. They are yellow to my 110s, so they are probably level 111-114.
I AA AoE mezzed the three, since they are rare spawn, wanted to see if they dropped anything. I kept the first two mezzed, and we had the 3rd down to about 30% when all 3 poofed, just de-spawned. They are really rather rare. ChantressClio