Ink (real name Benjamin) is Humphrey's adopted son. Ink knows very little about his real father and nothing about his real mother. He is studying the classics at university in Oxford and will
more than likely follow in Humphrey's footsteps. Ink becomes like a big brother to the kids as they embark upon their quest. Ink faces down the Eaters of Poison and even though he’s scared, he
will never let anyone see it. Ink finds out some very important details about his real father and Dr. Khalid.
"I’m here to protect whatever my father discovered - whatever it is you wanted so badly you had to kill him for it."
Chronicles of the Stone Book 2