Overthrowing Heaven — Mark L. Van Name

NO GOOD DEED GOES UNPUNISHED ...

It began as a favor to a woman trying to get away from an abusive household.
Jon Moore grew up on an island of outcasts and in a prison laboratory. When he escaped, memories of the things he'd done still haunted him and he often helped those in need. His kindnesses frequently didn't work out well. This one really didn't work out well.

It hurled Jon and Lobo, the intelligent assault vehicle and Jon's only friend, down an accelerating, dangerous spiral involving: private armies and government covert ops teams; a courtesan who always seems a step ahead of him; rival superpowers that define ethics as whatever doesn't get in their way; and a brilliant, amoral scientist to whom human beings are just more experimental animals -- and who might be Lobo's creator.

Jon and Lobo take the reader on a headlong rush through armed enemies and untrustworthy allies and encounter what just might be the worst danger their partnership will face: the truth.