The Champions Tournament is a Fossil Fighters: Champions sidequest and the "final round" of the Caliosteo Super Cup. Taking place on Bonechip Island, the player must battle Stella, Terry, and Kent before battling Joe. If the player beats Joe, he or she will become the champion again and complete the quest.
Unlike the previous three tournaments, there are no breaks in between Fossil Battles, and the player may not access a VMM to change their team at any point during the battle royale. There are, in addition, four rounds of battling instead of three.
The player is rewarded with the "Mini-Stella", "Mini-Terry", "Mini-Kent", and "Mini-Joe" icons as well as a Head Mask upon winning the tournament.
Round 1- Stella. Stella promises to show the Hero how a Staff Leader battles.
Round 2- Terry. The Cranial Isle Staff Leader expresses his great desire to battle the Hero.
Round 3- Kent. Surprised that the Hero has not been defeated yet, Kent promises to end their winning streak.
Round 4- Joe Wildwest. Joe tells the Hero that it is an honor to go to war with them and says he'll make their battle one to remember.