The Fin started out as a humble and nameless, albeit incredibly intelligent dolphin who was adopted by onoxious animal trainers Frederica and Soren. The two entertainers named him Mr. Smartypants and began training him to do all forms of humiliating and dangerous stunts. After years of this stressful environment, he snapped and developed a criminal persona, referring to himself as the Fin from that point on. The Fin began to develop a knack for advanced technological engineering, and secretly ordered followers to "kidnap" him. While the Tick searches for the Fin to rescue him, he gets sidetracked by the many slot machines in Reno, giving him the oppertunity to complete his master invention, the fish magnet. With this, he can summon fish from across the globe with just the push of a button.