As usual, all the answers/clues have a fantasy or SF slant. There's stuff from books, comics, TV, films, the works. Some are hugely famous, some are mind-numbingly obscure. Have fun.

the crossword grid

Across

  1. Not a white shark, but colourless in the end (7)
  2. Home of House Atreides (7)
  3. Founded Arkham (9)
  4. Damned cuckoos! (7)
  5. Wrote about borrowing (6)
  6. Make transfers from this point. (2)
  7. Moorcock's walking stick (4)
  8. Martian war cry (4)
  9. Clarke met him. (4)
  10. Ringworld engineer. (5)
  11. NOT the guy who runs the delicatessen on Cable Street - be serious! (5)
  12. Dustwhales can be hunted on Sterling's sea (10,5)
  13. AKA Sparrowhawk (3)
  14. Heart of the great machine. (5)
  15. This magic land is found in Manchester. (6)
  16. Lone smuggler. (4)
  17. Goddess kept light? (4)
  18. Cousin from outer space? (2)
  19. BOSH! (4)
  20. Crime lord says 29 across is only good for feeding one (6)
  21. Toytown's most famous resident (5)
  22. Writer on the edge of forever (7)
  23. The enemy is dastardly. (8)
  24. Occupation of many a cyberpunk (6)

Down

  1. Not submarines, but the Valley Forge (6,7)
  2. A ball named after the dog?(5)
  3. Dark actress, dark costume, bright character. (5,3)
  4. Feline fatale (8)
  5. Wasn't he once lost in space? (7)
  6. Will it ever regenerate? (2,3)
  7. Chronicler of A.D. (6)
  8. Green meanie (3,5)
  9. Gil works for one, but has three? (3)
  10. He's at the olympic stadium. (5)
  11. The station master! (5,8)
  12. Wrote a history of Burgundy. (6)
  13. You seek in this game - make a clean sweep! (9)
  14. Langford, you dog! (9)
  15. Opening line: "The sky was the colour of a television set..." (11)
  16. "I love you, but we only have 14 hours to save the Earth!" (attr.) (4,5)
  17. 7-Zark-7's friend on Pluto (5)
  18. Spindizzy creator. (5)
  19. Pullman's Princess (3)
  20. A singular translation of yrch! (3)
  21. A full warcry for the Dean, but only part of one for the Brunnen-G. (2)

Answers