Scarlet Fever is a very dangerous force to be reckoned with, however it wasn't until she had come across Chaos that she really became much more of a deadly powerhouse.
Chaos could feel the connection between Scarlet and Katrina, and knew that she would take nearly any measure to kill the cat girl, and so with his chaos magic he impregnated her with a Chaos Seed. He used some of Echks's genetic makeup to aid in it's creation as well, making a disgusting genetic abomination. After her gestation, she gave birth to a horrid deformed creature known as Panic, which is one of the creatures as a part of the Order of Chaos. It possesses the genetic information of a Great White Shark, Human, Cat, Demon, and even of a God due to Nitros's genetic material being mixed in with Scarlet's to give her such resilience. These were all amplified by the power of Chaos and Madness to create an unstoppable killing machine that filled creature's hearts with panic.
It's animal instincts cause it to want to protect it's mother, though if it came down to it, she would just be another meal for the creature, but she loves the little thing as much as a brutal, murderous, cannibalistic creature can love. Though she too would eat her child if given the opportunity. He may be a bit too pointy for her though.
Panic possesses many diseases and toxins within his barbs and multiple teeth that make him an even more deadly creature, and it shares the same venom that Echks possesses in his tail, which causes a creature's body to produce blood until it violently explodes. The claws on it's wrist can extend, and it often uses them to hook creatures on that it can then bring to it's mouths. Panic is incredibly fast and can move swiftly on Land or in water and can carry several tons at a time, meaning that even after a significantly amazing meal it can still carry it's mother astride it's back.
Like it's mother, Panic too can consume quite a bit, though it tends to immediately convert back to energy as it has a supernatural metabolism. This makes the creature eternally hungry.
If it would aid it in combating enemies, it can disgorge the contents of it's stomach like a pressurized geyser, often times harming and disgusting any enemy it effects in such a way, and infecting the creature as well.
Scarlet has also given birth to several other horrible creatures similar to Panic whom are cosmic beasts just as he is, yet some are even less defined and a few even died immediately due to their corrupted forms being unable to hold the power of madness...
Here we have Panic consuming a meal as Scarlet rests on his back. This is quite some time after her creation as she is quite plump now, possibly even pregnant with another horrible creature....
Panic was first drawn 10 years ago here! Can you believe that!?
http://darkmastern.deviantart.com/art/Order-of-Chaos-1-36613531