Mundus is the ruler of Hell and the main antagonist of Devil May Cry and it's reboot DmC. Born over 2,000 years go, Mundus quickly gained power and planned an assault on the human world, but when he was betrayed by his chief general, Sparda, Mundus was defeated and the gates of the Underworld closed. In a fit of revenge, Mundus attacked Sparda's human wife and killed her.
In major difference between the original Devil May Cry and the rebooted DmC is that Mundus' motivations for killing Dante's mother, Eva, was due to Sparda's betrayal over his lover for her, an angel. Other nateable differences are that he rules Limbo City in human form via his business ventures such as the soft drink Virility.