As Gabriel Belmont (Castlevania: Lords of Shadow) developed his power as Dracula to untold heights using his Cursed Blood, he developed ever increasing levels of corrupting magic through Blood Magic.
After falling to Corruption, Archon Lucien (Darksiders 2) was capable of using it in conjunction with his holy light magic.
Eclipso (DC Comics) can use his powers through his connection to the Heart of Darkness diamond to corrupt others with magic, putting them under his sway as "Eclipsed" people.
As the Daedric Prince of Corruption, Molag Bal (The Elder Scrolls) is a master of corrupting others, from his Soul-Shriven to the creation of corrupted dragons, to even the very inception of vampirism itself.
As the inventor of most dark magic, Chthon (Marvel Comics) can influence almost anyone who uses his works, which have created a great many supernatural creatures.