Spirit Dragons
The Overwatch universe thrives on science and doesn’t delve too much into magical aspects, save for Symmetra’s Magician skin. If there’s anything supernatural or paranormal going on, Blizzard has a good explanation for it. Moira’s healing pee spray? That’s just nano-tech. What about Tracer’s time-traveling phenomena? It’s chronal disassociation from her failed teleportation experiment, but Winston fixed that with her chronal accelerator. These things always boil down to science… except for those Shimada spirit dragons.
You’ve probably seen these dragons hundreds of times in Overwatch, and if you know what’s good for you, stay far away from them. They do insane damage and are really quite powerful, but we still don’t know what they are. Hanzo can literally shoot an arrow that transforms into twin dragons that can pass through any solid object, yet leave you for dead after a few seconds. What do they feel like? How do they kill? Are they the Shimada’s pets? Seriously, Blizzard hasn’t even addressed whether these things are magic or not. At least we know Hammond’s just a large scale science project in a wrecking ball done right.