The Cranial Isle Battle Royale is a sidequest in Fossil Fighters: Champions and a "Part 2" of the Caliosteo Super Cup. It takes place on Cranial Isle, and is open to only Vivosaurs of the Cretaceous Era. The quest is unlocked after completing the Ribular Island Battle Royale. After the player has finished the Cranial Royale, the Ilium Royale will be unlocked.
The player is rewarded with the "Mini-Pauleen", "Happy Pauleen", "Bashful Pauleen", and "Pauleen's Mask" icons as well as an Arms Mask upon winning the tournament.
Round 2- Rosie. Rosie's back from Round 2 of the Ribular Island Royale and, angered about her defeat earlier, swears she'll take the Hero down.
Round 3- Pauleen. Pauleen is ecstatic to be battling the Hero again, saying she won't lose to them.