Arguably the most tragic descent. Wanda was a villain at the start (Age of Ultron), but she evolved into an Avenger. Her turn in Multiverse of Madness is brutal because she is lucid. She knows she is hurting people, but as she says, "That doesn't seem fair... that they get to live their lives while my children are still suffering." Wanda’s evil is logical maternal grief pushed past the breaking point of reality. She is the cautionary tale of "the road to hell is paved with good intentions."
Critics are divided on the trope. Is it a celebration of female rage, or a punishment for female power? superheroine turned evil
The most common catalyst is a breaking point reached after unbearable personal tragedy. For example, the Scarlet Witch’s descent into villainy in the MCU was fueled by the compounded grief of losing her children and her partner, Vision. Similarly, Willow Rosenberg from Buffy the Vampire Slayer turned into "Dark Willow" following the death of her girlfriend, Tara. Arguably the most tragic descent