Thea Nicerio is the Gym Leader of Titanium Town Gym. Once defeated you can use the Hidden Machine (HM) Dig outside of battle. She gives the Terrain Badge once defeated. She specializes in Rock-type Pokemon. Her main Pokemon is Lileep. She is a chilhood friend of the champion. She is also known as " Mole Of Asia". She had a relationship with an elite 8 member but she moved on.
- She is the most stubborn yet happiest trainer in the region.