Altdra:I love The Game so here we go

Makoto=Vampire Hunter because his ability to combat despair

Kyoko=Investigator

Hiro=Medium

Toko=Serial Killer

Mondo=Werewolf a strong half-human monster

Mondo:I AM NOT A FURRY

Junko=Vampire Because she spreads despair

Byakuya=Blackmailer Because he can shut people up(Toko)

Celeste=Witch because she manipulates people

Taka=Mayor because Moral Compass,Mayor,seems right

Hina=Survivor because she somehow managed to survive.

Hina:Hey!

Sakura=Spy If you don't know why,why are you reading this.

Mukuro=Vigilante

Hifumi=Forger cuz he is a writer.

Chihiro=Transporter because it is the least violent thing there is.

Leon=Janitor because he cleaned his crime.

Sayaka=Framer because  she tried to frame Makoto.

Hajime=Amnesiac cuz could not remember why he went to Hope's Peak

Nagito=Consigliere cuz smart but evil.

Sonia=Escort because she has three guys fallen in love with her.

Mikan=Doctor

Twogami=Disguiser

Nekomaru=Retributionist cuz he basicly got resurrected.

Akane=Bodyguard because she is strong

Kazuichi=Veteren because he is super paranoid

Kuzu=Godfather

Peko=Mafioso cause she is Fuyuhiko's right hand woman

Hiyoko=Consort because they both dance.

Mahiru=Lookout because she keeps a watchful eye when she is taking a photo.

Chiaki=Sheriff because she occasionally helps.

Idk for Gundam,Ibuki and Teruteru.