|Debut:||Fossil Fighters: Champions|
Minister Pomposa comes to the Caliosteo Islands to find Nomadistan's missing crown princess. He asks Joe and the Patrol Team for help, offering a Miraculous Fossil Rock as a reward for locating her. The team goes out to search for her after he shows them a picture of the princess and her caretaker. Todd and Pauleen return first with Joanie, thinking she is the princess. The Hero appears soon after with Princess Pooch, and Minister Pomposa reveals that she is actually the one they're looking for.
He tries to convince Princess Pooch, who ran away from Nomadistan to participate in the Caliosteo Cup, to return home, as her parents miss her greatly. However, she proves her passion for Fossil Battling to him, and he allows her to stay with her father's blessing. He gives the Hero the promised Miraculous Fossil Rock for bringing her to him.
The Hero meets Minister Pomposa again in the first round of the Ribular Island Battle Royale. He tells them that Princess Pooch has convinced him to take up Fossil Battling.
Fossil Stadium - Ribular Island: Minister Pomposa is the Hero's Round One opponent in the Ribular Island Battle Royale.
| Daspleto|| Raja|| Acro|
- Minister Pomposa's name may be a corruption of "pompous," in reference to his proud personality.