MAGNUS SKK THE BRAIN IS ROTTING WAIT BECAUSE THAT WOULD BE SO GOOD ACTUALLY BUT WHO'S ASSISTANT???? WHO'S HEAD ARCHIVIST??? WHO'S AVATAR OF WHAT IM CRYING
A lot of Magnus and Bungou spoilers ahead btw, if you're a TMA fan finding this watch Bungou Stray Dogs and if you're a BSD fan listen to The Magnus Archives BOTH ARE AMAZING.
Note: the spoilers are much heavier if you haven't listened to TMA. Seriously, I'm spoiling the entire story to the end of Season 5. For BSD it's more about backstories than anything else.
BUT LIKE OKAY. Dazai could definitely be an avatar of the End because of his philosophy and way to think about life and its point, but I also think Lonely would fit him (being separated from humanity literally the point of No Longer Human's main character, who he's based off of), and obviously the Eye because of how clever and planning he is. Honestly, Head Archivist could either be Dazai or Fyodor because of their big brains, it would make sense for them to be Eye avatars. Due to obvious favouritism, I'll say Dazai would be Head Archivist.
Then we have Chuuya the beloved!! I feel like the obvious answer would be a Desolation avatar because of his Corruption form, but I feel like Lonely also suits him because of everyone dying? So he's either Desolation (most likely one), or Lonely. Probably an archival assistant, maybe the only one who lives like Martin?
If Dazai and Chuuya are in the same organisation, it would make sense to put the rest of the PM with them, so we obviously have Mori's cunning ass as Elias/Jonah Magnus/Eye avatar (note: the original Jonah Magnus could be a more evil version of Natsume).
Using the PM cast means that two other archival assistant could be the Akutagawas, who are definitely the Slaughter. For extra angst, only one could become an actual avatar, or they could both make one avatar and have a domain together by S5.
Atsushi is obviously the Hunt, being a weretiger and all. I don't know if he'd be a full on avatar, but it would make sense by the end of the story! He'd probably join much later, in a situation similar than the one we currently have with one employee from the ADA having to transfer back to the PM by the end of the current arc.
Considering the fact that Archive employees can't leave, it would make sense that Yosano would still be part of them, since she could never leave like she did in og BSD. I feel like she'd have an arc similar to Melanie's, and maybe end up stabbing her own eyes to leave as well.
Last archival assistant could be Kunikida? This one doesn't really make sense in terms of storyline, but leaving Chuuya alone with all the insane people in there feels a bit unfair, so they will be the order boys (poor Kunikida having to bear both skk AND sskk's presence, poor guy).
As for other characters, we have:
Fyodor's manipulative ass as avatar of the Web,
Oda who died to the Slaughter avatar Gide (fun!),
Fukuzawa and Ranpo (and potentially Minoura?) as external cops,
The other two Black Lizards as friends of Gin's from Artifact Storage,
Verlaine as the avatar of The Desolation who marked Chuuya (and killed all his friends, yay!),
Kyu as avatar of The Stranger,
Ango & co. in a special division that helps against manifestations/avatars of the Entities.
If anyone is somehow in both fandoms at the same time, please come brainrot with me AGH