Y'all. The three beasts in the Inferno are the three legendary beasts of the Johto region in the Pokemon series. Not only do the beasts visually line up to the beasts (Raikou = leopard, Suicune = she-wolf, Entei = lion), but the lore also matches.
Also, Suicune, the "she-wolf," is set apart from the other two beasts because it is much harder to catch. It runs away each time you meet it, an interesting inversion of Dante's representation.