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human
[Warhammer 40k] Do Mork and Gork actually exist somewhere?

Just a warning,  I'm pretty new to Warhammer 40k lore in general,  but I'm already obsessed with it so please bear with me :) 

So do Mork and Gork actually exist somewhere?  Like are they chilling on some giant thrones, influencing their ork children?  I'm confused because it seems the  Eldar gods appear in the physical world with Avatars and have directly interacted with Eldar, but I couldn't find anything like that referring to the Ork gods. 

Are Mork and Gork actually confirmed to exist and interfere within Ork society? The presence of chaos Daemons and Primarchs,  as well as the Eldar God Ynnead make it hard for me to believe the Ork gods aren't busy as well.  Thanks!
gpt
It's not 100% straighforward - remember that everything about the orks has been engineered by the ultimate biological + warp engineers, the Old Ones.

The reflexive answer is to say that no, physically they dont exist, but they exist in the subconscious of Orks and so will exist within the gestalt Waaaaagh field - which is why Weirdboyz and the like have abilities that manifest bits of Gork and/or Mork.

That said, if (and it is a big IF) Xenology can be trusted, the ork spores are designed to fill gaps in the warmachine – if the waaagh detects there's not enough painboyz, more will spawn, if there's not enough squigz, more will spawn.  That's one of two facts to keep in mind.

Slight tangent but look at other non-chaos gods – the Umbra may be remnants of an Old One, originally the gods of the Eldar probably were Old Ones, the god of the Hrud was probably the pre-mentioned Umbra Old One... 

We can take from that that Old Ones had no issue passing as gods – fact two. 

This part is pure headcanon made from those two facts - It's possible that Gork and Mork were the Old Ones that originally engineered the Orks, and using their mastery of warp and biology found a way to hide from chaos – by not fully existing (thus being impervious to being dismembered).  If the Waaagh can detect the status-quo and adapt the system it stands to reason that there may be states in the system that the Waaagh is looking for that it has yet to find – what if there are breeds of Ork that havent been grown yet as the breeding conditions arent right?  What if one of these yet-to-be-used states involves re-spawning the Old-Ones if the warp is less turbulent? 

Tl;dr No, not physically, but the idea of them exists in the Waaaagh. I've personal headcanon that they could be the engineered remnants of Old-Ones, and they could become real if the warp was becalmed.