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But we find out at the end that theres more to the sweet-natured professor than we thought.

Lets break down that baffling second post-credit scene.
So what happened?
Despite the warning, he says he has to try, presumably to save Sersi.
Who is Dane Whitman, really?
Dane is actually the third man to take on the Black Knight moniker.
His uncle was the second, though he was a notorious villain until Iron Man defeated him.
Whats up with the creepy sword?
Thats Sir Percys original Ebony Blade, which Merlin fashioned from a fallen star.
Like Thors Mjolnir, it also immediately comes to Dane when he calls it.
So the blade had nothing to do with rescuing Sersi in the comics?
Yep, Dane became the Black Knight long before he met Sersi.
In fact, the MCU significantly rewrites their romance to be a good old-fashioned teacher meet-cute.
(Crystal ofThe Inhumans,RIP that show and those wigs.)
But back to business: who was that voice?
So this blade scene is actually a segue intoBlade?
Another possibility: Dane could be used to introduce the X-Men.
With some MCU rewriting, could Dane be the literal bridge for the X-Men to appear?
Or perhaps this is all just a tease for a Dane Whitman-centric film or Disney+ show.
Call itA Kit in King Arthurs Court.