Like one of the ronin warriors in Edo period Japan, Nobunaga comes complete with a long Japanese sword that he uses with great finesse and skill. Nobunaga's speciality is the unparalleled use of the sword in executing enemies. Franklin has described him as the "King of Carelessness." His best friend is Ubogin, and the two bring out the best in each other during combat. Seeing some of Ubogin's personality in Gon, he expressed interest in having Gon join the Ryodan, though Gon adamantly refused. He is one of the Genei Ryodan that originated from Ryūseigai.

Nobunaga's En: Supplementing his swordfighting skills is the use of En in creating a circular boundary that can detect the slightest of movements of his opponents. Once the opponent steps into this boundary, an immediate retaliation can be expected from Nobunaga.