Marius is a Lycan who appears in Underworld: Blood Wars. He is the new leader of the Lycans following the Purges and the decimation of the Antigen Lycans by Selene. He is the main antagonist.Little is known of Marius' personality at this time as the overall synopses of his backstory is currently unknown. He is, however, shown to be a capable leader with an unspecified yet unsurprising hatred of vampires. Considering his age and strength, he was possibly held in captivity by vampires before being freed, possibly around the time of Lucian's uprising centuries prior to the initial Purge. He is a capable warrior with possible military or Lycan training due to his ability to efficiently coordinate and manage to remaining and almost decimated Lycan forces against the equally decimated and dying vampire race