AI

AI is the level of intelligence that an animatronic has. In the FNAF series, it historically can go from 0 to 20.

Near the beginning of the First Puppet Revolution, Springtrap put everyone's AI to 0, turning them to his side-Though Puppet was immune to this. The AI was then put back to 20, though it did nothing. It might have gotten set back to 0 after this, though.

The AI Paradox
We know that the Puppet's final conversion to the Dark Side came from a 98.8% Speech Level diplomatic trick, ala Fallout, not a switch in AI. Yet, Gaster's machine was able to convert him back to normal via a machine that upped his AI. Do we have a plot hole?

The answer is no, we don't. We already know that ever since the 4th wall broke, canon became less stable. Ian was able to create new Surreal Memes as well. Perhaps Gaster was abusing the instability of canon, somehow bringing the times from those earlier days to the present, since canon wasn't stable back then. Gaster does likely know at least three of the five keys, after all (though he might not know that they are keys).

Or perhaps increasing the AI allowed Puppet to see why Scott was right after all. After all, AI is the robotic version of intelligence. Just like tinkering with the brain tinkers with one's mental capabilities, perhaps AI works similarly. So this supposed paradox can be resolved.