Vesperon

Vesperon is an entity or spirit that corrupts people by tempting them with their biggest desires. He feeds on those with negative emotions, such as sadness, anger, fear, etc. He can only be seen by the victim(s) being corrupted. He gives them dark magic powers. And he also grants them access to his assistance. All the victim has to do is say his name once, and he will appear instantly to take action. He does all this by giving them a simple handshake. But those who mock or disobey him, he leads them to their demise...