Another android, considered as Jiro's "younger brother" as he was also made by Professor Komyoji. While Jiro was made by Dr. Komyoji voluntarily, Saburo was one of the androids Komyoji was forced to make under the dominance of DARK to "correct" his mistake by destroying Kikaider. Unlike the other DARK androids, Saburo is a cyborg. Gill had Dr. Komyoji's brain transplanted into the very android he created as his trump card against Jiro. Hakaider almost succeeded in killing Kikaider, but he was forced to stop fighting because he needs periodic blood transfusions from Dr. Komoji's body. When White Bone Flying Squirrel defeated Hakaider, Mitsuko was able to return Komyoji's brain to his body. In the sequel show, Kikaider 01, Professor Gill's brain somehow wound up in Hakaider. Saburo often announces his presence by whistling. Saburo is played by Jouji Mayama for his human form but is voiced by Shōzō Iizuka in his robot form.