10 Worst Things Doctor Strange Has Ever Done

10. He Was Doctor Doom's Teacher

When Doctor Strange found himself in debt to the despotic dictator, Victor Von Doom, the Sorcerer Supreme was forced to teach him the ways of black magic. Doom intended to use this power to rescue his mother's soul from Hell.

The two warlocks ventured to Hell where they battled Marvel's version of the Devil, Mephisto. In the end, Doom was successful with freeing his mother's spirit from the clutches of evil.

Sounds like a happy ending, right? However, Strange's decision to amplify Doom's magical abilities had serious ramifications for the Marvel universe. In the 2003 story, Unthinkable, Doom unleashed a horde of demons on his nemesis, Reed Richards, and trapped Richards' son, Franklin, in Hell. Doom was only able to accomplish this magical spell because Strange taught him how to open a portal to Hell.

Over time, Doom became the most powerful sorcerer on Earth save for Doctor Strange. He has used his dark magic time and time again to torture and kill his enemies.

The Sorcerer Supreme only fulfilled his debt to Doom because he believed the mad monarch had noble intentions. In hindsight, Strange realised that he is directly responsible for making the deadly Doctor Doom even deadlier.