Sentry (2000) #1

The First Appearance of the Sentry! You’re the greatest hero of the Marvel Universe. So why doesn’t anyone remember you? Your name is Bob Reynolds. You know you were once a super hero. You were the Sentry. But then something terrible happened. Something that threatened all life on Earth, something that caused your best friend — Mister Fantastic, the leader of the Fantastic Four — to betray you. Now it’s happening again…and the Sentry must return. But at what cost?