So I was looking over the canon info for Error and it got me wondering- was there anything in particular that made Error go from impulsive and angry to cunning and manipulative? Was there any specific reason as to why he realized he needed to abandon his previously reckless ways?
lmao but in all seriousness here,
His transformation was gradual, meaning he had once learned that maybe abusing his emotion for power is not the best way to win a fight over Ink who's at the time is a prankster (And actually still is), and because Ink knows Error is a knucklehead and a bit short circuited he was beaten many times due to his emotional damage.
And so as time goes on he started to learn to be more cunning, skillful, and mischievous from many places in the multiverse before he destroyed them. And once he has gotten to the coding powers, he started to become more and more in control of his power and emotion. He started to scheme things and won without having to use his powers, that's how he got to this point of Error in time.
He'd be having a lot of surprises to give in the future~