Some ideas I have about a possible past are :
#1 Cyborg went to school with the Psychic, Immortal, Vampire and Feral. However his appearance is much different now. He may or may not remember them, depends on my needs at the time i guess.
#2 Cyborg is actually just a Ghost Program of a dead soldier. This allows the government to keep him around.
#3 Both 1&2.
http://www.darkhorse.com/Comics/Previews/91-399
http://www.darkhorse.com/Comics/Previews/91-401
http://www.darkhorse.com/Comics/Previews/91-398
http://www.darkhorse.com/Comics/Previews/91-410
http://www.darkhorse.com/Comics/Previews/91-408
http://www.darkhorse.com/Comics/Previews/91-409
http://www.darkhorse.com/Comics/Previews/91-403
http://www.darkhorse.com/Comics/Previews/92-008
http://www.darkhorse.com/Comics/Previews/92-040
http://www.darkhorse.com/Comics/Previews/92-056
http://www.darkhorse.com/Comics/Previews/92-070
http://www.darkhorse.com/Comics/Previews/92-146
http://www.darkhorse.com/Comics/Previews/92-175


