Definite Kill! Comet Kick (必殺! 流星キック Hissatsu! Ryuusei Kikku) is the fourth episode of Return of Ultraman.
MAT receives word of a monster sighting, so they disembark aboard the Arrows to fight it. Go's ship is taken down by the four-legged, horned monster and immediately engages in battle with it as Ultraman Jack. Proving to be a formidable opponent, Ultraman ultimately loses the fight. His Color Timer expires and he disappears. As a result, Go ends up in the hospital with numerous injuries. While Go is out of commission, the other MAT members believe the beast thrives on atomic power. Go's friend Sakata helps him train to strengthen his injured leg so that he can have a return match with the monster, Kingsaurus III.
- Hideki Go (郷 秀樹 Gō Hideki ):Jiro Dan (団 時朗, Dan Jirō )
- Kato Katsushiro (加藤 勝一郎, Kato Katushiro ): Nobuo Tsukamoto (塚本 信夫, Tsukamoto Nobuo )
- Takeshi Minami (南 猛 Minami Takeshi ):Shunsuke Ikeda (池田 駿介, Ikeda Shunsuke )
- Ippei Ueno (上野 一平, Uneo Ippei ):Hatashi Mitsushi (三井 恒, Mitsushi Hatashi )
- Yuriko Oka (丘 ユリ子, Oka Yuriko ):Mika Katsuragi (桂木美加 Katauragi Mika)
- Fumio Kishida (岸田文夫 Kishida Fumo ):Ken Nishida (西田健, Nishida Ken )
- 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, Ken Sakata ):Shin Kishida (岸田森, Kishida Shin )
- Narrator (ナレーター, NaretaAkira Nagoya (名古屋章, Nagoya Akira ) ):
- Ultraman Jack (ウルトラマンジャック Urutoraman Jakku): Eiichi Kikuchi (菊池英一, Kikuchi Eiichi )
- Kingsaurus III (キングザウルス三世 Kingusaurusu Sanze): Toya Takanobu (遠矢孝信 Takanobu Toya)
Return of Ultraman Volume 1 Features Episodes 1-4.