Evil Monster Realm of Terror (恐怖の怪獣魔境 Kyoufu No Kaiju Makyou) is the third episode of Return of Ultraman.
Two young college students die while scaling a misty mountain, a legendary summit where monsters are said to dwell. Meanwhile, Go and Ueno are out on patrol and Go feels the presence of a creature nearby. Back at headquarters, none of the other MAT members believe him, but Captain Kato thinks there might be something to the legend. Without informing his team, Kato sets out on foot to find evidence. He finds it in the form of a gigantic monster, and ends up trapped in a cave. Having seemingly disappeared, and with no one knowing of his whereabouts, Go heads for the misty mountain to find the captain. Minami and Go goes with the MAT Gyro but Go uses the parachute to get down disobeying minami. When Go gets down there he takes a sleep. The next day Go sets out to look for Captain Kato. Go finds Kato then the monsters Detton and Sadola show up! Kato escapes promising Go that he would find help. Go becomes Ultraman and fights off the monster. The two monsters were mighty for Ultraman he was so close to death. Then he used the Specium Ray on Detton and uses the Ultra Slash to kill Sadora. In the end MAT went to look for Go but they found both him and Kato.
- Hideki Go (郷 秀樹 Gō Hideki): Jiro Dan (団 時朗 Dan Jirō)
- Takeshi Minami (南猛 Minami Takeshi): Shunsuke Ikeda (池田 駿介 Ikeda Shunsuke)
- Ippei Ueno (上野一平 Uneo Ippei): Mitsui Hatashi
- Yuriko Oka (丘ユリ子 Oka Yuriko): Mika Katsuragi (桂木美加 Katauragi Mika)
- Katsushiro Kato (加藤勝一郎 ): Nobuo Tsukamoto (塚本信夫 Tsukamoto Nobuo)
- Fumio Kishida (岸田文夫 Kishida Fumo): Nishida Ken (西田健 Ken Nishida)
- Jiro Sakata (坂田 次郎 Sakata Jirō): Kawaguchi Hideki (川口英樹 Hideki Kawaguchi)
- Aki Sakata (坂田アキ Sakata Aki): Rumi Sakakibara (榊原るみ Sakakibara Rumi)
- Ken Sakata (坂田健 Sakata Ken): Shin Kishida (岸田 森 Kishida Shin)
- Narrator (ナレーター Nareta): Akira Nagoya (名古屋章 Nagoya Akira)
Return of Ultraman Vol 1 Episodes 1-4.