Leonis is a Character in DEXTER. He is an ex-special forces officer that used to work with James Doakes. When Doakes is looking into Dexter Morgan for being The Bay Harbor Butcher, he takes his blood-slides and goes to Nicaragua. Their he meets Leonis and asks him to run the slides through a local hospital. He never got the chance however as the slides are taken before they get the chance by the FBI. Maria LaGuerta later gets information from him, saying Doakes was running the slides and relays this information to Special Agent Frank Lundy but didn't make a difference once Doakes' body was found and he is officially identified as the Butcher.