IB MELCHIOR, the writer-producer of a number of B movies, has passed on.
Melchior wrote and the story that ANGRY RED PLANET, TIME TRAVELLERS, ROBINSON CRUSOE ON MARS, JOURNEY TO THE SEVENTH PLANET, REPTILICUS, the USA language version of PLANET OF THE VAMPIRES and the story DEATHRACE 2000 was based on. ALL of those films have played the Marathon save for TIME TRAVELLERS!
Yes, Ib was the man who typed out the name "Mark!" all of those times! He may even have been the one that came up with Captain Mark Markary!
Melchior also wrote episodes of Men In Space, 13 Demon Street and The Outer Limits.
http://trailersfromhell.com/rip-ib-melchior/#.VQsQzeFmqSr