Key Characteristics: Gray, shark-like, good swimmer, 25 feet long, apparently holds a grudge.
Typical Dialogue: "Glug, glug, glug, RAAAAAARRR!"
How to Achieve the Look*: Get some sort of experimental "species change" to turn yourself into a shark, or at least a porpoise with a chip on its shoulder. Make sure to have a body of water nearby that's bigger and saltier than your bathtub. Find a string quartet to follow you around and play your theme song.
The Easy Way Out: Compare prices on shark costumes
*For macabre entertainment purposes only. Do not try this at home.
