Glenn meets his demise in the comics during a particularly intense and chaotic event. The circumstances surrounding it are quite harrowing and have a significant impact on the story's direction.
Negan's death in the comics occurs at a specific point, but I can't recall exactly when off the top of my head. You might need to do a detailed search or refer to dedicated comic forums for the precise moment.
Iron Man meets his end in a particular comic arc where the circumstances are both intense and unexpected. It's a turning point that shakes up the entire comic landscape.
It's hard to say for sure if the story of Sybil is true. Different researchers and experts have different viewpoints. It depends on how you interpret the available information.
Sybil is claimed to have roots in a true story. But when presented in a fictional format, certain aspects could be fictionalized or exaggerated to create a more engaging tale. Despite this, it retains a connection to real-life events.
In a sense, Sybil was a true story. It was based on real accounts and research, but like many adaptations, it might have taken some liberties for the sake of presenting a compelling story on screen.