Who is the teacher in da vinci code?

The teacher in "The Da Vinci Code" is Silas, a albino monk who serves as the antagonist in the book.

While he is not a traditional teacher in the sense of educating students, he is the one who acts as the "teacher" or guide for Robert Langdon and Sophie Neveu in their search for the Holy Grail. He leads them on a series of riddles and challenges, ultimately attempting to kill them to protect the secret.