Enver to appear in 'Dexter'
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Google-fu indicates that it may or may not be a recurring character.
A Dexter website has the casting call up for the season 7 premiere entitled, "Are you..."
[GEORGE NOVIKOV] 30s to 40s. Russian heritage but American born, so no accent. Tough, aggressive, possibly a little overweight but imagines he is "all that". Basically, he's just not a good guy. RECURRING GUEST STAR.
[VIKTOR KAREV] 30s, handsome, well dressed, stylish, slight Eastern European accent. He is a polished businessman who can get his hands dirty when he has to. GUEST LEAD.
These are the only male characters in the casting call, so Enver might be playing a probable recurring character. Although one of his tweets suggests that he's playing the guest lead.
Dexter will premiere on September 30th (Sunday) 9|8c on Showtime
SOURCE:
Dexter Daily