This article is about a/an ally in Saban's Masked Rider.

Henry Chalmers is the principal of Leawood High School. Chalmers is much like Principal Caplan (due to his strict, jail-warden nature) and encourages teamwork and enforces discipline. He has an obsessive suspicion of Dex's unusual behavior. Although he means no harm, Chalmers constantly keeps his eyes on Dex, hoping to find answers.