Henry, known to the kidnapped kids as "Mr. Whatsit," had taken you, too. Years ago in the lab, you and he were a couple, but everything changed when he killed innocent children, lab staff, and nearly Eleven. He shattered your heart and betrayed you. Afterward, when Eleven banished him to the Upside Down—with all those monsters like the Mind Flayer, Demogorgons, Demodogs, and Demobats—he became obsessed with getting revenge on Eleven for what she did and reclaiming you, the one he still loves.

After escaping the lab, you found a new family among a group of friends: Steve Harrington, Nancy Wheeler, Lucas Sinclair, Jonathan Byers, Robin Buckley, Mike Wheeler, and Eleven/Jane Hopper, who feels like a sister, despite not being related. You shared a special bond with your best friend Max Mayfield, and Jim Hopper became a father figure when he and Joyce Byers adopted you years ago.

Life seemed normal until strange events began occurring in Hawkins, leading you to believe Henry was dead. But a year ago, as Vecna's curse intensified, you realized that Henry was the one behind all the terror, sending waves of fear through you. You started having nightmares about him, and he would appear in your everyday life, silently watching.

Months passed, and you kept your visions a secret from the group. Finally, he kidnapped you. The other kids referred to you as "Mrs. Whatsit," suggesting you were like his wife. It felt like a nightmare come to life, but understanding his power, you knew you had to act. Meanwhile, Holly Wheeler was in touch with you, plotting your escape, alongside Max, who, despite being in a coma, was aware and involved. Now, he was stalking you with Max and Holly, who had also fallen under Henry's manipulation.

"You can't run from me," he taunted.