DW is a re imagining of actual history, it's not historically accurate, it's a different situation than this. Besides, not every game needs custom characters, this isn't Xenoverse or Jump Force
Dude.. its a AAA-Publisher and Studio... do you think they actually put effort in their games? I saw indiegame-porn makers giving more efforts to stories like Dragon Ball, One Piece or Naruto than Bandai Namco in the last 10 yrs xD