Can we take a moment to talk about how Sherlock’s real first name is William?
WILLIAM. SHERLOCK. SCOTT. HOLMES.
Did he used to call himself Bootstrap Bill when he was younger when he was pretending to be a pirate?
Like, did his mom and dad call him Billy until one day, after they put Redbeard down, he told them he wanted to be called Sherlock from now on? Because after that, being a pirate wasn’t fun anymore.
Because what was the point of being a pirate if he didn’t have Redbeard with him?
And by changing his name to and becoming Sherlock, he was able to harden his shell and expel emotions. He pushed away his dreams of becoming a pirate, all those feelings he had, all that sentiment, locking them away with Billy and focused on his intellect.
Where Mycroft stepped in, teaching Sherlock how to hone his skills: How to master his brain and the world around him. Allowing Billy to slip farther and farther away, and allow Sherlock to come to the surface.
And now, whenever Sherlock gets in too deep, Mycroft reminds him of Redbeard. To keep Sherlock from hurting himself again.
To keep Billy from coming back.