Evil Tyrant Overlord from Disgaea.
After waking up from a two-year "nap", Laharl rules over his father, King Krichevskoy's, kingdom with an iron fist!
He's stubborn, power-hungry, arrogant, a natural-born brawler, and had a weakness for humongous boobs. By weakness, I mean he gets sick by the sight of them. (Etna and Flonne are flat, so they don't bother him in that area.)
Along with Flonne and Etna, Laharl is a recurring character throughout the Disgaea Universe. He and the girls have also appeared in other games made by Nippon Ichi, such as Phantom Brave and Makai Kingdom and The Guided Fate Paradox.