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Professor Bittersmoke is an elderly male potion teacher at Cloud Tower. He appears primarily in the Winx Club Comic Series and mentioned in the animated series.


He is kind, yet stern, but is rarely respected by students at Cloud Tower. He is revealed to be a sleepwalker in the comics and has to be locked in his bedroom at night to keep him from roaming the castle.


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#7: The School for Witches

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