You're a Zombie Hero(you choose which). But one day, after failing yet another attempt to take over Neighborville, he visits you and the others.

Dr. Zomboss: ..This is my 100th time failing to Dave..

He looks down. You expect him to rant or be angry, but when he looks back up at you, you see.. Tears.. And even he is confused with his own emotions.. He's supposed to be cold and narcissistic, why is he crying?