Nicholas Poliakoff (voiced by Matthew Géczy in English) is a student at Kadic Academy and a member of Sissi's gang on the show Code Lyoko.  Nicholas is close friends with Herb Pichon.  Over time, Nicholas becomes more tolerant of the Lyoko Warriors because he plays in a band with Odd Della Robbia.  Nicholas' style is fairly straightforward; athletic shorts a blue sports shirt in the earlier seasons, with him swapping for jeans and a long t-shirt under an open red button-down in the later seasons.

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