like i said

[capcom memberan]

mundus will return cuz i saw his name in nero vs berail trailer

 

[Tony_Redgrave]

We saw Lucia's name in Lady's bullets during a DMC3 cut-scene too. I did not see Lucia in DMC3 though.

 

[Zato-OW]

he wont return in this game. there are demons now that are stronger or just as strong as mundus 4 demons btw i doubt we may see him again.