X-51 (I) (0-12) (1999-2000) X-51 The Machine Man (I) (0-12) (1999-2000)
Title on cover is "X-51 Machine Man", in the indicia only "X-51".
Series No. Date Year Title
X-51 0   1999 A mere technicality
X-51 1 September 1999 The persistence of memory
X-51 2 Late September 1999 Ghost in the shell
X-51 3 October 1999 X.E.R.O. tolerance
X-51 4 November 1999 With friends like these...
X-51 5 December 1999 Circuits maximus
X-51 6 January 2000 A view to a kill
X-51 7 February 2000 The harder they fall
X-51 8 March 2000 Aftermath
X-51 9 April 2000 Starting over
X-51 10 May 2000 Warzone 1/2: Road rage
X-51 11 June 2000 Warzone 2/2: Communion
X-51 12 July 2000 Space odyssey