Tivey has aqua green eyes and medium length orange hair. He has orange cat ears along with a tail and wears a white robe. Unlike his siblings, he wears a monocle on his left eye, making him give off an intellectual and calculating aura.
Tivey tends to let Mimi and Hetaro do whatever they want unless it involves him and acts like a straight man to his siblings' actions. Contrary to their love of the outdoors, he prefers to stay indoors and gain knowledge, such as reading books in the corner, though even then he is bothered by Mimi. He is in charge of the Fang of Iron's clerical duties, which he excels at to the point where it's said that the mercenary group wouldn't function correctly without him. Because of this, he sometimes helps Anastasia with her business, however he refuses her offers to have him permanently move to her company.
Sometime in the past, Mimi, Hetaro, and Tivey were abandoned by their parents and were taken in by in by Roshi. As he tried to find help, he met with Ricardo with a plan to rescue Anastasia and the siblings. After with the defeat of Reisel, Anastasia vowed that if anything happened to Roshi, she would take the Pearlbatons under her care.
After the assailants killed Roshi, Anastasia, Ricardo, and the Pearlbatons get revenge on the murderers. They've lived with the Fang of Iron under Anastasia and Ricardo's care ever since.
Divine Protection (加護 Kago): Tivey has the Divine Protection of Trisection (三分の加護 Sanbun no Kago), which he uses in conjunction with his siblings Mimi and Hetaro. It enables them to bear each other's physical and emotional burdens and can also be used to split damage between them such as to block death blows. However, as Mimi is the strongest out of the three, her brothers are often stuck with bearing her burdens. In addition, they can launch a destructive interference wave using the Divine Protection and the other siblings, though Mimi is limited to five times and Hetaro and Tivey are limited to two times, so the maximum usage per day is four times.
The triplets unleashes burst of a violent destructive mana from their mouths together. Only two of the three of them can do it at a time. This ability was learned from Ricardo as he is the originator of that ability.
Fire Magic: Tivey is able to use Fire Magic.
Liger (ライガー Raigā):
Ricardo and the members of the Fang of Iron ride on large grey wolves called Ligers. Although they are similar to Earth Dragons, Ligers lack strength, but they are more agile and have higher speed and endurance. They have a high chance of winning if they were to fight in melee combat.
- According to the author, Tivey's birthday is May 5, the same as his brother and sister, Hetaro and Mimi.
- Tivey is the smartest of the three siblings according to the Q&A.