Attack on Titan using Weimar-era parties considering its basically an allegory of the Ostfront in World War 2:
Eren-NSDAP
Mikasa-NSDAP
Armin-SDP for tactical reasons, probably would prefer DDP
Reiner-SDP
Jean-SDP
Sasha-KPD
Krista-DDP
Connie-NSDAP
Marco-Centre
Annie-NSDAP
Ymir-KPD
Hannes-Centre
Dr. Yeager-DVP
Commander Erwin-DVP
Captain Levi-NSDAP, might actully resemble Hans Rothfels
Commander Pixis-DNVP
1. Mikasa is a racial minority. (Granted, not one with which the actual Nazis had problems, obviously, but in the context of the story...) I would picture her and Eren as more staid, Hindenburg-style military conservatives, likelier than not to be independent voters biddable by a variety of rightist or nationalist factions, who would be in significant danger of being co-opted either soon before or soon after 1933. DVFP for example I can sort of see.
2. Connie strikes me as a Zentrum type, honestly.
3. If it's an Ostfront allegory I think it's more likely that every character would be CPSU, Germanic names notwithstanding. But that's boring.
4. KPD Sasha and Ymir YES.
5. Of
course Christa would be bourgeois left-liberal.
I might do this with current Japanese political parties later.