Rejected characters, Archie's, what next! Rivals from the past? That's correct!
These rivals haven't seen eachother for quite a while, don't'cha think?
Knuckles is a red 16-year-old anthropomorphic echidna, who is both physically powerful and highly resilient. He has a white crescent symbol on his chest. The character is both a friend and a rival to Sonic the Hedgehog. Knuckles has two spikes or claws on each hand, and his dominant trait is his strength and is used to dig. He can also glide by trapping air under his dreadlocks, and is very skilled at a wide variety of martial art forms.
EggRobo is an egg-shaped humanoid robot resembling Dr. Robotnik. It first appeared as an enemy in the game Sonic & Knuckles. In Sonic's storyline in that game, it only appeared as standard badnik enemy in the Sky Sanctuary Zone, after being seen launched from the Death Egg.
A echidna, and a robot, anything can happen. it's time to finish the brawl they didn't finish 16 years ago.
Knuckles was way to powerful fo EggRobo, he didn't even stand a chance. Knuckles won the round!