And since Durarara!! and Baccano! are also set in the same canon:
Celty’s gotta be Time - she’s immeasurably old and associated with death and loss, it’s pretty much her whole thing. Shizuo is equally-obviously Rage, and Anri Void.
Ryuugamine is the most protagonist-ish character, and Masaomi tells him what to do, so Masaomi is Light, I guess. Let’s call him Prince of Light, because he ruins everything!
I assume the Blood aspect to mean war/conflict, but Homestuck fandom has adopted the meaning of connections/bonds, and I don’t have a huge problem with that. The first would be Izaya, the second would be Ryuugamine. As alternatives, Ryuugamine could also be Hope - dude goes around believing in collective action like some kinda chump, and it works! - and Izaya could be Heart. Izaya talks about loving people a lot. The little shit.
Mika is Doom; she’s double-sided and has a spare life. Seiji could be either Hope or Heart, whichever one Izaya and Ryuugamine left on the table. He believes that he’s in love so hard that he is.
Walker and Erika are jointly the Thieves of Life. I guess I’d better give Shinra Breath? I don’t care about Shinra, he’s gross and Celty deserves better.
And I’ll call Simon Space, because he takes up a lot of it, and acts as kind of an incompetent parent to the rest of the cast. Sorry, Simon, but your characterization is kinda thin.
