Angst? What Angst?: Just get kidnapped, nearly killed, dumped in a storm drain, and turned probably permanently into a shark? Cool, let's eat a hot dog stand and ride some motorcycles!
"Shark to the Future" & "Shark Wars": The future version of Dr. Luther Paradigm, like his past self, is the Arch-Enemy of the Street Sharks. In the future, Paradigm perfected an air born gene-altering virus that transformed everyone in Fission City into his mutated slaves brainwashed into serving him. Deciding to spread the virus across the world, Paradigm becomes the despotic tyrant of the Earth and tries to eradicate those who were immune to his virus. After being foiled by the Street Sharks from the past, Paradigm rebuilt his Time Machine, and he helps his past self create the virus; leads an invasion in the present day; and kidnaps one of the Street Sharks, Jab, and brainwashes him into his loyal servant. Paradigm tries to have Jab attack his brothers and mutate them into brainwashed servants.
Season 3: Bad Rap is the leader of the Reckless Raptors, an intergalactic criminal who ravaged his home world and move across the galaxy to spread chaos and destruction in his wake. Upon being reawakened by Paradigm on Earth, Bad Rap contacts his minions to eradicate the human race and rule the planet. Bad Rap launches nuclear missiles unto major capitals across the world so that the entire planet would wage war upon each other and destroy themselves for Bad Rap to rule what's left, a tactic he uses on other planets. In "Shark Quake", Bad Rap tries to activate all of the world's volcanoes to make the world uninhabitable for humanity, endangering the lives of millions. In "Jungle Sharks", Bad Rap tries to set the Amazon rainforest on fire to prevent the Street Sharks and Dino-Vengers from finding a cure for a deadly disease. In "Trojan Sharks", Bad Rap attempts to launch the Dino-Vengers to be trapped in space forever while trying to restart his plan of kick-starting a global nuclear holocaust.
Andrew Rannells as a lead character in a cartoon clearly trying to be Teenage Mutant Ninja Turtles less than a decade before he plays various supporting characters in an actual Ninja Turtles cartoon.
Adding to the above: Rannells voiced Bobby Bolton, who (even in his shark form) was the most girl-crazy of the Bolton Brothers. Rannells ended up coming out as gay after he turned 18.
Memetic Mutation: Almost nobody watched it, but if you say "Jawesome", every nineties kid will know you're talking about this show.
Moral Event Horizon: Paradigm stole his former friend's research and mutated him into a grotesque monster. He then mutates that same man's four sons into shark men and labels them as threats to Fission City, even suggesting it was their father that did it to them.
Paranoia Fuel: A meta example. Jordan Minor of geek.com detailed how he, at one point, invented a number of completely fake episodes of the show, including a character who did not exist... and people seemed to somehow remember these episodes, indicating that the hoax was somehow so good, it altered people's memories of Street Sharks.
So Okay, It's Average: Aside from being an obvious attempt to cash in on the success of the Teenage Mutant Ninja Turtles, most people agree there's nothing really special about Street Sharks, just an okay cartoon to watch if you're bored.
Tainted by the Preview: The toy commercials appeared before the cartoon aired. They were live-action and looked amazing. The cartoon just could not measure up to the commercials.
detailed how he, at one point, invented a number of completely fake episodes of the show, including a character who did not exist... and people seemed to somehow remember these episodes, indicating that the hoax was somehow so good, it altered people's memories of Street Sharks.