Sherlock, many years later, had a child, no one knew the mother- and quite frankly they were scared to find out- but Sherlock loved his kids like no one thought was possible.
He was a single parent, raising the young twins- yes, yes twins- with only an occasional help from his best friend.
His son's name was Hamish and his daughter's Elizabeth, after his two closest friends. And the kids uncle and aunt.
Hamish had bright blue eyes, a lighter shade of brown hair than his father's, but just as curly. His skin a fragile pale color, but he had the aura of a leader. People only knew what he wanted them to know, a talented liar. He hoped to become the right hand man of Uncle Mycroft when he came of age.
Elizabeth had dark brown hair to match her dad's, the same spectrum eyes that brought everyone speechless, a slightly tanner complexion than her brother, yet still quite pale. She had the attitude of her father, if not more snarky. A love of knowledge for the criminally insane, hoping to become her father's 'protégé' so to speak as she rounded thirteen.
Both of the twins were also fourth degree black belts in Karate.
Don't mess with the Holmes.
A/n: If any of you would like to make this into a story, go ahead. Just a small idea in my mind.