Team Logo. The Butte Copper Kings were a team in the Pioneer League. They were the Rookie affiliate of the Anaheim Angels. In 2001 they moved to Wyoming and became the Casper Rockies. Retrieved from "https://prosportsteams.fandom.com/wiki/Butte_Copper_Kings?oldid=17082" Categories: Former PL Teams Teams in Montana Teams in Butte Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.