Joe Mach, known as Gō Mahha (麻波 剛 , lit. Mahha Gō?) in Japan, is the operator of BlastMan.EXE and appears in MegaMan Battle Network 6. He appears as Lan Hikari's teacher in the Central Town School. He's kind, but strict. During BlastMan's attack on the school he gets stopped by rogue security robots while trying to protect the students and is overpowered. He gives Lan his teacher card so that he can get into the faculty room and access the controls there.