So yeah, you're probably wondering what the hell is this club all about. Well gather 'round children and hear the tale of Knuckles' Super Mode.

As you may or may not know, the 7 Chaos Emeralds grant power to those who are capable of using them. That power affects different people in different ways. When our good friend Knuckles the Echidna uses the emeralds, he transforms into Super Knuckles.

Now this part's a tricky one. According to the canon of the Genesis/MegaDrive games, Super Knuckles looks like this:
[link] (image coming soon XD)
As you can see, he is mostly unchaged...just surrounded with an aura. Howver, the Genesis can't exactly process that so when you play as him he glows a pink color. Nowadays, he just has a golden shield.
The comics took a different route. There his fur stays pink. Either one is acceptable.

Anywho, as Super Knuckles, Knuckles' power is greatly increased. He can shatter walls by just running into them. He becomes faster, invulnerable, and is able to fly. Like Super Sonic, he hovers above ground and his hair stays in motion. In team formation, he has an attack where he can make fireballs come out of the ground/air by punching it. He can also use what appears to be the Maximum Heat Attack which is his own version of Sonic's Light Attack.

So the question begs, why is this club called the Hyper Knuckles club? Well, when the Chaos Emeralds make contact with the Master Emerald, they increase in size and become the Super Emeralds. When the power of all 7 super emeralds and the Master Emerald is activated, an immense power is granted to the user. This power transforms Knuckles into Hyper Knuckles. He looks and acts the exact same except he is far more powerful and is so fast that there is an after image effect, which makes it look like there's 3 of him. His strength is increased to the point that if he glides into a wall, the resulting rumble will kill all surrounding enemies.

Back in the older days of the comics, Knuckles' Super form was called Hyper Knuckles. Though today the transformation is called Super Knuckles, both names are acceptable since there was a Hyper Knuckles in the game.


and now you know the story of Super Knuckles and Hyper Knuckles.