In the Thunderbolts* trailer, who is Bob and why I'm terrified for the rest of the team

Recently, more footage dropped of the upcoming Thunderbolts* movie and in addition to the majority of the cast was a hospital attired gentleman named Bob. There are two kinda of people, the people who saw Bob and said "and whom"? And there are the people like me who saw him and said, "Oh no". First off, it's "who". Whom is to replace "her" or "him". Secondly, let me tell you what's got me worried.

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[HERE THERE MAY BE POTENTIAL SPOILERS]

There's genuinely only one person Bob can be, given the clues they've given us and that is Robert Reynolds, a gentleman occasionally known as either The Sentry or the Void depending on whether or not he feels like being a Face or a Heel that day. I'll explain.

In a comic universe filled with mad titans that want to find a way to kill half the universe and firey bird gods that try NOT to, Robert Reynolds still, somehow, always finds away to be the hottest mess. A mess that burns with the power of a thousand suns.

See, a long time ago in 1947, Canada, not known for their high-end military experiments wanted to try their hands at making their own Captain America. But they wanted him to be stronger. In fact they wanted him to be (checks notes) one hundred thousand times more powerful.

It didn't work because of course it didn't and the project was, more or less, all but scrapped until it was discovered by the charming meth addict Robert Reynolds who downed the whole thing, gained "the power of a million exploding suns" and caused the death of his friend and all the guards at the facility. And it gets worse from there.

Your Robert Reynolds became the Void! Move forward four spaces!

Over the course of time, Sentry keeps showing up, trying to be a hero, and causing so much death that there needs to be some major event to stop him. They've attempted to kill him but he always manages to come back within a few hours.

To make matters worse, the ironically named Mastermind, decided to mess with Robert's head and make him think that there was a massive, invincible creature, named The Void who was coming to kill him and grew in strength every time The Sentry used his powers.

Oops, your Robert Reynolds became the Void, go back to start.

What Mastermind DIDN'T know was that Sentry was so powerful that he could, subconsciously, create the Void. Descriptions of almost any story that involves Sentry and the Void, if you're curious, usually contain the line "ripped the character completely in half". Except for the time where he just flew back and forth through Asgard until he reduced the entire city into a parking lot.

Long story short, the Sentry is a bad scene. Not only for the people who is in his sights, but for those on his team as, often,