Megamind has three Superman subversions. One is obviously Megamind himself. He was not raised loved by the world, but rather was loved by those hated by the world. Because he was still raised with love, he does care about other people, hence his character development. But because he didn't receive wider love growing up, his own is misplaced at first.
Metro Man was not loved growing up in a way that mattered. His adopted father was clearly very absent, and while we don't know much about his family, their relationship seems superficial. Because of this, his sense of duty to the world is also superficial, hence his boredom.
Hal wasn't raised with power. He gained it and was shown how to use it by a 'space dad' who only taught him power and not love. Hence, he sees it only as a grasping means to an end.
All three of these subversions, in their negative space, create the silhouette of the superhero that they are parodying. That silhouette is of a space child that came to earth and was cared for very deeply by the world, and taught love through his experience of love, and because of that holds fast to his duty to the world. Which is Superman.
