Knuckles the Echidna (Sonic Underground)

Knuckles the Echidna is the super-strong guardian of the Floating Island and protector of the Chaos Emerald that keeps it afloat. He would defend it with his life against all who trespass on it. He first appeared on the show when he captured Sleet and Dingo because he was tricked into believing that the Hedgehog Triplets were going to steal the Chaos Emerald. Sonic changed his mind, and now Knuckles is on their side. He also has a crush on Sonia.
He was voiced by Brian Drummond.
==Trivia==
*Sonic Underground is the first TV show Knuckles appeared in, the next being Sonic X.
**However, it isn't his debut in animated media, the first was in the 1996 film Sonic the Hedgehog OVA.
**Knuckles was however planned to appear in the cancelled third season of Sonic the Hedgehog (SatAM). The red eyes piercing from the darkness at the end of the final episode of the series were meant to belong to Knuckles himself. However, writer Ben Hurst changed the source of the eyes to Naugus in his draft for the cancelled season 3.
***Had that happened, that would be the first appearence of Knuckles in animated media as apposed to the said film alongside Sonic Underground. 
*His artwork is reused from one of his iconic American Sonic & Knuckles illustrations by Greg Martin, albeit traced into cartoon styled drawing instead of keeping Martins original glossy airbrush style, and an addition with his eyes looking away from the viewer to the left instead of looking at the the viewer.
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