When sent to Earth to fight evildoers, he disguises himself as a Japanese man wearing an ordinary suit and fedora hat (looking almost like a police detective), but still uses his "Super Giant" name.

Plot: Super Giant first appears on Earth to stop foreign terrorists who threaten to destroy Japan (and the rest of the world) with an atomic bomb.

Cast: Super Giant - The Mysterious Spacemen's Demonic Castle (スーパー・ジャイアンツ 怪星人の魔城 - Sūpā Jaiantsu - Kaiseijin no Majō) is a 1957 black and white Japanese film directed by Teruo Ishii.

Super Giant - Earth on the Verge of Destruction (スーパー・ジャイアンツ 地球滅亡寸前 - Sūpā Jaiantsu - Chikyū Metsubō Sunzen) is a 1957 black and white Japanese film directed by Teruo Ishii.

Plot: Super Giant continues his battle against the Kapia-Seijin, who not only send a mysterious witch after a group of children, but summon their almighty leader to alter Earth's rotation.

Super Giant - The Artificial Satellite and the Destruction of Humanity (スーパー・ジャイアンツ 人工衛星と人類の破滅 - Sūpā Jaiantsu - Jinkō Eisei to Jinrui no Hametsu) is a 1957 Japanese film directed by Teruo Ishii.

Super Giant - The Spaceship and the Clash of the Artificial Satellite (スーパー・ジャイアンツ 宇宙艇と人工衛星の激突 - Sūpā Jaiantsu - Uchūtei to Jinkō Eisei no Gekitotsu) is a 1958 black and white Japanese film directed by Teruo Ishii.

Plot: Although he was believed to be destroyed by the Nazi-like army, Super Giant breaks into the satellite, and a long, riotous battle ensues.

Trivia: It was after this film was made that director Teruo Ishii left the series, upon hearing of a child who imitated Super Giant (even wearing a hand-made cape) by jumping out of a window and landing on the street below, seriously injuring himself.

Super Giant - The Space Mutant Appears (スーパー・ジャイアンツ 宇宙怪人出現 - Sūpā Jaiantsu - Uchū Kaijin Shutsugen) is a 1958 black and white Japanese film directed by Akira Mitsuwa.

Super Giant Continues - The Devil's Incarnation (続スーパー・ジャイアンツ 悪魔の化身 - Zoku Sūpā Jaiantsu - Akuma no Keshin) is a 1959 Color/Scope Japanese film directed by Chogi Akasaka.

Plot: Super Giant copes with a mad scientist (disfigured in World War II) who uses science and sorcery to turn his deceased daughter into an evil witch that murders women.

Super Giant Continues - Kingdom of the Poison Moth (続スーパー・ジャイアンツ 毒蛾王国 - Zoku Sūpā Jaiantsu - Dokuga Ōkoku) is a 1959 black and white widescreen Japanese film directed by Chogi Akasaka.