Defining the "biggest hero" in Stranger Things is subjective, as the show features a diverse cast of characters who contribute significantly to the fight against the Upside Down. However, Eleven stands out as a strong contender for the title.
While other characters like Mike, Dustin, Lucas, and Will are crucial to the story and possess their own unique heroism, Eleven's powers and sacrifices make her a formidable force.
Eleven's telekinetic abilities are essential for defeating the Demogorgon, the Mind Flayer, and other creatures from the Upside Down. Her selflessness is evident in her willingness to put herself in danger to protect her friends and the town of Hawkins.
Her past as a test subject in Hawkins National Laboratory, along with her emotional struggles, add depth and complexity to her character, making her a compelling and relatable hero.
Although Eleven's journey is marked by loss and trauma, she emerges as a powerful and resilient figure, embodying the spirit of heroism in the face of adversity.