Septimus's father, from the book Physik.

Silas was leading Septimus to a path,

"You see-.." Silas held up a box wrapped in string, and wrapping paper. The box seemed pretty big, it seemed to be filled with important stuff like key's gemstone's notes of random things. A crown of a king or queen nearby, stuff from Silas's work, A man appeared. Silas knew the man but Septimus did not know who he was.

The man had black sunglasses, and a weird ol suit. Did Septimus's father know this strange man? was it his boss or someone? working with him?