The Super Sk-Growl was sent to destroy the FF as revenge for the embarrassment that the Sk-Growl race had suffered at the hands of the fab foursome.
The difference with the Super Sk-Growl to a normal Sk-Growl was that he had the powers of the Fur-Tastic Four combined. Although Sk-Growls were shape shifters, they could not and did not process the powers of the people they copied.
However, with a little bit of help from Sk-Growl scientists, they found a way to give powers to Kollar'T or the Super Sk-Growl to you and me.
The FF found that The Super Sk-Growl had better control over "their" powers and was much stronger. He was more Stretchy than Lead, Could use his Invisibility better than Shih Tzu, could burn hotter and fly faster than Jaw-nee and could hit harder than Bone.
That was not the end of this menace, as he would return again and again, not just to battle the Fut-Tastic Four but any of the Super Hero Hounds protecting the Earth.
This wraps up Fur-Tastic Four week. I will be back to resume their story some other time.