Strange rare boss on Corkus

Hi I encountered many times a rare boss while doing the corkus lootrun (something like the fool eater) but I cant find anything about it. I dont remember its name but it spawns near the avos entrence (near the
Shackles of the Past objective) It looks like a sort of totem with 2 avos guards next to it, when you start fighting it it just teleports you so I never managed to kill it. Do you have more informations about this thing ?

 

Ohoh, I think I know what you're talking about! A good while ago, lootruns had a lil update that added random encounters- I think that's what they're called o-0. I don't know if it gets "unlocked" after doing a specific challenge, or if it happens after doing said challenge multiple times, but yea it's like a lil bonus thing that can happen :). Keeps you engaged or,, makes it less monotonous or something, as a treat lol.

(Is it the encounter where the one avos will say something like "you humans are all the same!" before attacking? The weird words flashing across the screen from the totem freaked me out at first LMAO, I had no idea what was going on :') )

 

Yes, maybe it is what you are saying, although I dont remember it saying something