KnucklestheEchidna, guardian of the Floating Island and it's Master Emerald was the main leader of the Chaotix in "Knuckles Chaotix" on the 32X (As the name would suggest).
KnucklestheEchidna - Knuckles (included to the Chaotix), would be the leader of Team Chaotix in most of the Chaotix universes.
Knuckles has appeared in Sonic Underground in four epsiodes, and appeared in the japanese anime (TAKI Co, 1996) two episode series.
The Sonic the Hedgehog comic books, which are produced by Archie Comics, are currently an ongoing series starring Sonic and his friends.
Archie also has a comic based on the Sonic X cartoon series:
In the early 2000's, wind was caught of lead writer Ken Penders' attempt to get an animated feature film centered around Knucklesthe Echidna into development.
The Sonic the Hedgehog comic books, which are produced by Archie Comics, are currently an ongoing series starring Sonic and his friends, featuring most of the time Knucklesthe Echidna back up stories (but in recent years Knuckles will be part of the Sonic stories).
The Archie Sonic comic also makes a number of adaptations.
In the comics, he lives in Knothole, a city-like place in more recent stories (in the past it had a more "small village" look).
The island is the home of the Master Emerald, a large and powerful green gem that is protected by Knucklesthe Echidna and also keeps the Angel Island itself suspended in the sky.
Angel Island (formerly called the Floating Island) is a fictional island floating high in the air in the world of the Sonic the Hedgehog video game series.
Angel Island Zone is the name of the first zone in Sonic the Hedgehog 3, where Knuckles is introduced.
