Nenji Rokushakudama

He is a lead pyrotechnician at a fireworks factory and was the operator of Nenjiro.EXE before he deleted himself to stop an out of control fireworks launcher. He later gets custody of Asteroid NapalmMan.EXE, who shares his passion of explosions. Despite the two getting into heated arguments often, they share a strong bond. When the two merge, Nenji becomes C.F. NapalmMan.

(Source: The Mega Man Knowledge Base)