Knuckles the Echidna (Sonic Underground) as What if Sonic Underground ended the story? - myFiction Fan Cast | myCast.io
Knuckles the Echidna (Sonic Underground)
Age: 26
male
Knuckles the Echidna is a character in the Sonic Underground television series. He is the guardian of the Floating Island, and protector of the Chaos Emerald that keeps it afloat.
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