Which Major Character Disappeared From The Second Series Of "Blake's Seven"�?

Rather to the surprise of audiences, the second series continued without Blake himself, as well as Jenna (Sally Knyvette) a smuggler and computer expert. The loss of Gareth Thomas, though, who gave up playing the freedom fighter Roj Blake, at first seemed like an impossible setback. However, it was decided to continue anyway, announcing that Blake and Jenna had disappeared, and replacing them with new characters Tarrant, Dayna and Soolin (Steven Pacey, Josette Simon and Glynis Barber) all fighters or mercenaries. They even acquired a new ship and a pedantic computer called Orac. The series actually remained as popular as ever, and audiences seemed to have forgotten all about Blake by the time he was briefly resurrected in the final episode. He returned only to be shot, very much in the spirit of the series, by Kerr Avon (Paul Darrow) his sinister former companion and now leader of the outlaw band.