John Sturgis

Dr. John Sturgis is a physics professor at East Texas Tech, known for his work on radiocarbon dating. Dr. Sturgis is initially a pen pal of Sheldon Cooper before the child prodigy audits his course as Medford High no longer academically challenges young Sheldon. Dr. Sturgis is instantly smitten with Sheldon's Meemaw and they begin dating, much to Sheldon's approval. He wears a tweed jack with elbow patches and rides a Schwinn Speedster since he doesn't drive. Meemaw describes him as "smart as hell, gentle, and funny (not always on purpose)" and George Cooper says he sounds like Sheldon.