The Devil May Cry series has the distinct usage of real world mythologies in it's characters , the developers took a trip to greece and observed all the monuments and learnt of the mythologies . This page shows all references.
From the divine comedy
Dante = derived from italian poet Dante Allighieri , who was a character in his own ballad "The Divine Comedy"
Vergil = derived from italian poet Romilius Vergilius Maro who helped the character Dante in the Divine Comedy.
Mundus = is actually Neptune/Pluto. Named after "the pit of Mundus" a greek monument.
Geryon = Is actually a giant in greek mythology and a chimera in the divine comedy.
Cerberus = is actually guardian of the demon world, poetically in DMC 3 he was made the guardian of temen-ni-gru.
Alastor = is actually an evil persona of Zeus, the writers learnt about it from the temple of Alastor. In DMC 1 he produced an electric devilarm.
Jokatgulm = Designed after the Larnean Hydra , who guards another gate to the demon world under lake lakhesis.
Furiataurus = A minataur.
Nevan = A leanashee , a scottish vampire . Nevan is commonly a scottish boy's name.
Beowulf = is designed after the Pazuzu , a sumerian wind demon
Beowulf = An english ballad hero
Bolverk = An alias of Odin , further hinted by the fact that he had one bad eye and he was a norse zombie.
Nefastarrius is a gashadokuru , a japanese giant demon who preys on people when they are alone.
Agni & Rudra = Indian spirits of fire and wind respectively . In the game they are living swords of fire and wind.
Berial = A demon
Ifrit = A fire demon , in DMC1 he produced a fire devil arm.
The demonic tower temen-ni-gru , is modeled after the leaning tower of pisa.