Some of the Mahabharata characters/events and the entities I associate with them->
Krishna: extinction avatar! Mainly if you consider him to be the harbinger of a new yuga. Other options are the vast(ref: the bhagvat gita) and the web(self explanatory I think)
Arjuna: victim of the lonely. Spends a large portion of the epic on the road and exiled from his loved ones. Also I believe his pursuit of being "the perfect kshatriya" would lead to a sense of isolation from his peers. He was influenced by the hunt during jayadratha vadh.
Draupadi -> desolation is an obvious pick ,and objectively correct i feel. However I do think that the vastraharan was an example of slaughter- it was a violent act of malice that blindsided her, and left her scrambling without any allies. Post war she succumbs to the lonely, and that is what leads to her final fall.
Ashwathama-> avatar of the corruption. His massacre of the pandava forces is the day of his ascension. Slaughter also, obviously.
Karna-> the buried. This maybe a bit of a hear me out. But the way I interpret him, a huge fear of Karna's is that he would be stopped from achieving his true potential. Karna knows who he is as a person, and is (justifiably) quite confident in his abilities as a warrior. And yet his status as someone outside of royal lineage/caste acts as a barrier to his progress/social standing. He is the sun of the son, and his fire feels suffocated in the confines that society constantly tries to put him in. So yeah buried. Also web victim.
Shikandi-> I also read him as the buried, for pretty much the same reasoning as karna above. It is to be noted that Amba was a victim of the desolation, and I see Shikhandi as willingly carrying the burden of her vengeance. In general, all of the panchal siblings are affected by the desolation and slaughter in one way or another.
Yudhisthira-> There are so many fears plaguing this guy. Like draupadi, desolation is an obvious choice for him. The dice game can be argued as an example of the spiral.But I think he is most attached to the beholding. He is both watched( and judged, his worth weighed against his righteousness) and the watcher ( witness to the grief he has caused, the last one standing) .
Kunti-> Is also a victim of the eye! One of its aspects is the fear of having your secrets exposed. And well.
Hmmm what else. The yaksha encounter that Yudhisthira had was the stranger. Mausal parva was a slaughter ritual. The main war was again, the web.The flesh did try a ritual during the epic timeline , with Jasarandha as the conduit. Vidur and Sanjay are both agents of the beholding,but for completely different reasons. So is Vyasa.
Link to the fear entities for anyone who doesn't know them
https://the-magnus-archives.fandom.com/wiki/The_Entities