Byron made his debut appearance in Ancient Family Matters! together with his son, Roark. It was revealed Byron had once been the Gym Leader of Oreburghand had left his family to become the Gym Leader of Canalave as he was more interested in Fossils, leaving his former position to Roark. Byron battles his son for a short time before the match got interrupted by Team Rocket. It was later revealed that Byron still cared for his son as he kept the Fossil Roark had found as a child with him ever since.
Byron is obsessed with digging and Fossils. When his Fossils were stolen by Team Rocket in Ancient Family Matters!, Byron was too busy admiring the hole they dug into the building to notice.
In Dealing With Defensive Types!, Ash had his Gym battle against Byron, defeating him and earning a Mine Badge.
In Double-Time Battle Training!, Byron was presumably defeated by Paul, earning him his eighth Badge, and thereby making him eligible for the Sinnoh League.
He reappeared in a flashback in DP120.