If I correctly understand entropy (And please, correct me if I'm wrong.), it is the concept of complex phenomena becoming simpler phenomena, for example, a ceramic mug gains entropy when it shatters. And negative entropy is the concept of simple phenomena becoming more complex, for example, a canvas gains negentropy when an artist paints on it.
How does negentropy not apply to bots? As I mentioned in the OP, there are "learning" bots like Gaff and Engineer. You must admit that these bots are more intelligent and complex after a battle than before it.