Laharl

(from http://disgaea.wikia.com) Laharl is incredibly arrogant as well as snarky and always tries to prove that he is the strongest demon in the Netherworld and takes being Evil seriously, finding virtues to be vices and vices to be virtues. He is, however, extremely powerful for his appearance, which, despite his age, is still that of a small human child (his large hair antennae and billowing scarf are meant to mask this fact). However, he has a weakness towards (as in, he literally gets hurt by) optimistic sayings (especially anything concerning the word 'love') and women with sexy bodies. Although Laharl considers himself evil, he never does anything that may be considered truly immoral. Laharl also becomes a woman for a short while due to the wide-spread outbreak of Yuie Flowers in the Netherworld as demons get side-effects from being exposed to the Celestian plant. He happens to be very proficient at singing while in this form, managing to hold an idol concert that was deemed legendary.