Birthday- 4 April
Height- 171cm
Weight- 59kg
Blood type- AB
Hatsu- Gugenka and Tokushitsu

Much is unknown about Leorio. What we do know is that he once lost a close friend to a debilitating illness. Leorio feels deeply remorseful about not saving his friend, due to lack of money and knowledge in curing the illness. Thus, he aspires to become a doctor--one that not only cures the ill of their disease, but also waives the fee for the poor. In this light, his outwardly superficial reason to join the Hunter Exams in the pursuit of great wealth has a nobler justification--the money he gains is used not only to fund for his medical school fees, but also to pay for the medicine and other miscellaneous expenditures when treating the poor.

Leorio is not one who balks and retreats when faced against overwhelming odds in battle. A loyal, trustworthy ally who greatly values the ties of friendship, he acts like the 'big brother' of the group. However, his impulsive and brash nature has sometimes caused more trouble to people around him. Another flair he has is his ability to 'straight-talk' past any situation at hand.

Bargaining is one of his strengths, some say inherent nature, as he is able to haggle his way with shopkeepers and cut prices down to a unimaginable level. When Gon and Killua wanted to purchase handphones at Auction City, Leorio managed to cut down its original price by about 1/3, and bragged that his was bought at a cheaper price. Passers-by even clapped and cheered during the successful purchase!)