I've never been that keen on Christopher Lambert (Highlander) and I'm still not after this film. He's a bit of a personality bypass. Jeffrey Combs (Re-Animator, Castle Freak), meanwhile, is great as D-Day. Looking like a male version of Professor Twelawney, he draws you into the film's world with his mechanical tinkerings. You really don't want him to die. I'm not telling you whether he does or doesn't. Kurtwood Smith is fairly creepy as the Prison Director, Poe. Not as good as his top sweary performance in Robocop, but not too bad.
If you like this you could also try:
Screamers, Nemesis, Escape From New York, The Hidden.