Villains with EXTREMELY petty motives for becoming villains.
Infinite the Jackal (Sonic the Hedgehog) - Even though he was always an awful person, what truly drove him to villainy is him being called "weak" by Shadow after Shadow rightfully kicked his ass.
Sentinel Prime (Transformers One) - Sentinel became evil because he supposedly "sick of the Primes heroic speeches" and because he personality found being a moral and ethical person boring.
Syndrome (The Incredibles) - He became evil because he was rightfully called out by Mr. Incredible for being an egotistical jerk as IncrediBoy.
Big Jack Horner (Puss in Boots: The Last Wish) - He became evil because Pinocchio of all people managed to upstage his career.
2nd Dimension Dr. Doofenshmirtz (Phineas and Ferb: Across the Second Dimension) - He became evil because he lost his Choo-Choo Train as a child. That’s it. That’s his reason for being evil.