Tommy Erbter

… Tommy Erbter, age five, was biking up the other side of the street. He was a small, intense-looking boy on a twenty-inch Schwinn with bright-red training wheels. He was humming “Scoobie Doo, where are you?” under his breath. …

The unusual full name appears in both books, with compatible taunting behavior. Black House gives no age or explicit account of relocation. It does not establish that Tommy is Tyler’s schoolmate.