Baptiste has a really cool backstory in that he was a child who was made an orphan and homeless as a result of the Omnic Wars. He did what he had to do to survive including joining forces with the evil Talon. He grew up and realized this was wrong and that he could make the world a better place by doing the right thing. He really does sound quite heroic and I hope they explore his backstory in an event later this year.
While the characters and setting of Overwatch are of course awesome. The gameplay is the real draw here. The game modes are what you would expect. But it is the core gameplay that has sucked so many people into the world of Overwatch. It is so easy to pick up and play, but there can be a lot of depth here, especially if you are willing to work as part of a team and play your role. But at the same time, you can totally just lone wolf it and run around shooting everything you see!