I'll do my best when doing his story.

His name is Knuckles the Echidna. Chomps and knuckles is really a referance to the comics in which knuckles has a pet dinosaur named chomps, though it is unknown what the comic version of chomps is.

here is his apearence in picture form
http://silverflame757.150m.com/meknux.gif

his personality is quite the same as he is in the games except that he is more expecting to do what he can to protect the master emerald. He also has a hatred for people who are carefree, but that changed when he met chomps.

How the duo met is this. During Links adventure, he, along with sonic, tails, and knuckles accidently broke the kaiju game preserve wall. They found an egg when the destruction was over and decide to take it to be sacrificed because they have lost the kaiju's most prized possesion, The Holy Grail. They later found out that the grail was returned safely. A little later they have seen the egg hatch and knowing it was a predator, all, except knuckles, have fled. Knuckles, seeing it as a cute harmless pup, accepts it and powerful bond starts. He does everything a parent does, which includes naming him chomps. The only problem is feeding it as he experianced seeing him eat a mouse. He introduces them to the others. They were just close to accepting him when Chomps' predatory instincts caused him to bite tails' tail. After that, Chomps was treated horribly by tails and after knuckles told him that predators cannot be accepted to the city, though later they accept predators, Chomps runs away from the foursome heroes. Just as he ran away, His parents, A dark forest green male (which is his dad) and an albino female (his mom) enters the city. They find chomps and return to the game preserve. The inhabitants see that the wall is damaged and that they plan to seal it. Knuckles finds Chomps' family returning to their home. Chomps see's knuckles and tries to join him again. His words are " chomps, you must go to your family! The people are trying to fix the damage done to the wall!" Chomps becomes startled, then knuckles say's " It may be your first time you met me, but I have something important, we'll meet each other again sometime." After Chomps leave's, and the kaiju close the wall, the scientists were still unsure what to call Chomps' specie. Knuckles, being in honor by his new friend for life, calls his specie Tyrannosaurus knucklerii for his honor of experiancing one.