Clayman manipulates others to achieve power in That Time I Got Reincarnated as a Slime, leaving Tempest vulnerable to invasion just to fuel his Demon Lord ascension.
In Re:Zero, Regulus Corneas weaponizes his massive ego. Armed with near-invulnerability, the Sin Archbishop of Greed treats any minor disagreement as a deadly personal attack.
GATE's Prince Zorzal El Caesar uses royal privilege to justify horrific cruelty, abusing his power to enslave, torture, and brutally oppress the Warrior Bunny tribe.
In Sword Art Online: Alicization, Quinella erases and rewrites the identities of her Integrity Knights, forcing absolute loyalty by stealing their real pasts.
Overlord's Demiurge operates the horrific 'Happy Farm,' skinning captives for magical scroll parchment and using healing magic to endlessly repeat the process.
In Saga of Tanya the Evil, Being X orchestrates a catastrophic global war simply to force a single stubborn atheist to acknowledge divine authority.
Ehit poses as a benevolent deity in Arifureta while secretly fueling thousands of years of bloody war between humans and demons purely for his personal amusement.