Idris Elba is set to join the cast of "Sonic The Hedgehog 2" as Knuckles, Sonic's scrappy nemesis.
Plus, more Hollywood casting news.
Idris Elba cast as Knuckles in upcoming 'Sonic' sequel
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IGN reports that Idris Elba has confirmed that he will voice Knuckles the Echidna in 'Sonic the Hedgehog 2'.
