In common English, wolf lycans are usually called werewolves and the term lycan is actually quite rarely used.
A lycan was a formidable opponent, but mostly during a full moon.
What's the story: We're not entirely sure what a "lycan" is, but based on the trailer it probably has something to do with werewolves.
Though he's chained up with other "lycan" slaves, werewolf messiah Lucian (Michael Sheen) pursues a love that dare not howl its name with vampire princess Sonja (Rhona Mitra), while her aristocratic dad, Viktor (Bill Nighy), skulks around like a Balkan Ming the Merciless.
Though he is chained up with other "lycan" slaves, werewolf messiah Lucian