I thought his halo was almost nonexistent cause in the flashbacks with gramps he barely has it. But in this it looks very strong and DAMN his infection was bad he pretty much looked like a dead man walking
The Doctor was a Sankta in this AU and we never saw his halo only his deteriorating wings.
No, we saw his halo several times. post #5125489 is just one of many examples, and aside from crumbling it's a standard looking halo. In the depictions of him as an adult however, he's completely missing both his halo and wings. I'd say this is a pretty safe reference, especially if you actually compare it.
Oh, so Sin's Hidden Blade is actually based on Connor's Hidden Blade from AC III, where his blade is rotating rather than fixed, allowing him to use it like a handheld knife. Neato.
You truly did try to revolutionize the world, Doctor. The attempt was enough.