Sneak Previews - 1975 Alien The Prisoner of Zenda The Promise 3-16 was released on:
USA: 9 June 1979
Ben 10 Ultimate Alien - 2010 Prisoner 775 Is Missing 2-12 was released on: USA: 29 April 2011
It is unsure right now, but from the previews, it appears Big Chill and Humongosuar are going to be in it.
Answer: When the alien ship that held her prisoner crashed in "Jump City" in the episode 1 "GO!"
This is true: Yes his very first appearance is in episode 32:Prisoner#775 is missing in Ultimate alien series of Ben 10
Zhon The Alien Interviews - 2012 When I Was an Alien 1-5 was released on: USA: 29 June 2012
Alien Highway - 2013 was released on: USA: February 2013
Pet Alien - 2005 was released on: USA: 23 January 2005
Alien Racers - 2005 was released on: USA: 7 May 2005
Alien Protocol - 2013 was released on: USA: 30 June 2013
Alien Antics - 1927 was released on: USA: 13 October 1927
The Taint of an Alien - 1914 was released on: USA: 24 April 1914
Alien Souls - 1916 was released on: USA: 11 May 1916