She took the mother morph. The mother morph is similar to witches, so I guess similar to a Witch?

Shes a hot hive brunette nice measurements. Shes the type to flirt with you for her needs. Some say golddigger but she calls it independence. Watch out now she will eat your light up

yes, we are actually acquainted with her from D1. she is none other than our hive expert eris morn

Big head?

Presumably like some kind of spider if it has 50 eyes?

Ask Heiress Moan since she is a spy for the Hive, she would know.

We have art of Savathûn before the Worm Pact, when she was Sathona. The picture above is from the 1st Anthology, and is an image of the 3 sisters (Aurash, Xi Ro, and Sathona). I believe Sathona is most likely the one on the right. But since then she has no doubt changed in appearance after eating the Mother Jelly and gaining power in Ascendance throughout their ancient crusade.

There was concept art of sathona

By Bungies recent track record, either an oversized knight, an oversized thrall, an oversized acolyte, an oversized ogre, or an oversized wizard. My money is on oversized wizard. Edit: joking aside, I think “wizard” is the most likely base form for all the worm gods. You mentioned Oryx as “dragon-like”, I don’t see that. I’d consider more an embellishment on a base combination of knight and wizard. To my mind, I see the form of wizard being almost the “upper class” of hive units. The nobility if you know what I mean. They’re clearly the most intelligent of the species without the mindlessness of the thrall which are basically just “worked drones”, the unfettered and selfless aggression that knights embody as the “warrior caste”, the presumed zealotry of acolytes whose main purpose I assume is just the most reliable conduit in the tithe system, and the merely ritualistic nature of the existence of ogres. In other words, given that the hive gods were originally hive royalty, I would assume that they [i]all[/i] look like wizards, probably all were wizards in fact. And aesthetic embellishments they have/will possess, will be based on their individual natures. Oryx has similarities to a knight because of his violent and conquering nature. How savathuns appearance will be augmented is any bodies guess, as theirs no caste or unit in the hive that really embellishes “cunning”. Though maybe she will look mostly wizard-like as that’s the closest thing that does

I dont think we will ever know her form. She wants to make the imconcept of ignorance in Hope's of never dying (without realizing she will probably turn into a brain dead husk that doesnt know anything) in the process.

Personally I've imagined her to be fashioned after a deathsinger.