Dr. Luther Paradigm (Dr. Piranoid or Paranoid): Dr. Paradigm is a university professor, and the main villain. He has a
metal eyepatch and later he wears a robotic suit. The suit is heavily armoured and also has offensive capabilities like
the ability to fire out harpoons. Due to an accident, Paradigm got injected with pirahna DNA, and turns into the freakish
Dr. Piranoid when ticked off. He is responsible for the Street Sharks, his Seavites & many other mutations, not to
mention the disappearance of Dr. Bolton and Sara's power to talk to sea creatures. He'll stop at nothing to take over Fission
City, make the Sharks & all the citizens his minions, and get back what he believes belong to him; Swimmy,
Leaper & Sara's power.
Slobster: Slobster, along with Slash, is one of Paradigm's earlier experiments. He was created by injecting a lobster with
the DNA of villainous figures like Ghengis Khan and Captain Blood. He has
huge claws that can chop through just about anything.
Slash: Slash is another of Paradigm's first experiments with gene manipulation. A swordfish that was also injected with
the DNA of villains like Ghengis Khan and Captain Blood. He has a drill for a nose that can drill through even the thickest
Killamari: Killamari is the third of Dr. Paradigm's Seaviants, created from a squid captured off the Great Barrier Reef
in Australia. Killamari has the ability to project natural 'spears' or 'harpoons' from his mouth and the many suckers covering
his body- these projectiles drip with an extremely potent venom. He is as nasty as the other guys, yet he & Slash have a
tendancy of not getting along.
Repteel: Repteel is the only one of Paradigm's Seaviants to have originally been human. The aged owner of a run-down hotel
accidentally demolished by the Street Sharks during a fight with Paradigm's Seaviants, he willingly allowed Paradigm to merge
his genetic codes with those of a moray eel and an electric eel.