Sentry (Robert Reynolds)

Sentry (real name Robert "Bob" Reynolds) and The Void are respectively a superhero and supervillain in the Marvel Comics universe. The character was made by Paul Jenkins, Jae Lee and Rick Veitch. He was first in Sentry #1 in September 2000. He used to be a methamphetamine addict, but Reynolds took the Golden Sentry Serum, to gain superhuman powers.

Sentry became respected by civilians and other heroes. Many people think he is one of the most powerful beings in Marvel and its universe. He's also an ally of many superheroes, such as Iron Man, Doctor Strange, and the Fantastic Four. He later became a member of the Mighty Avengers, the New Avengers, and the Dark Avengers.

In other media

Sentry made his live-action debut in the movie Thunderbolts* (2025), set in the Marvel Cinematic Universe (MCU), and Lewis Pullman plays the role.