|This article is about a/an episode in Gekisou Sentai Carranger.|
A Red Light to Enlarging (巨大化に赤信号 Kyodaika ni Akashingō) is the fourth episode of Gekisou Sentai Carranger. It is the start of a two-part story involving a peculiar discovery by the Bowzock's Inventor Grotch and the creation of the Carranger's Ranger Vehicles.
On a trip to Earth to sample the local delicacies, Inventor Grotch accidentally becomes a giant from something he ate, forcing the Carranger into a situation where they must create a means to fight larger threats.
After angering Gynamo, Grotch flees to Earth where he runs into Ichitaro, the son of owner of Pegasus Garage. Grotch gets hungry, and asks Ichitaro (who realizes Grotch is harmless) what kinds of foods are good on Earth. He then pretends to hold Ichitaro hostage to force his mother to get some of each of the food Ichitaro recommended. When Grotch eats the imo-yokan, however, he suddenly grows into a giant.
The Carrangers arrive and attack the giant Grotch, but none of their weapons are effective. After a while Grotch suddenly shrinks back to normal, and flees before the angered Carrangers can beat him up.
Grotch reports his discovery to the rest of Bowzock, but isn't sure what caused his growth. He returns to Earth with Bowzock member MM Mogu and "kidnaps" Ichitaro again to demand the same foods from his father as before. When Mogu eats the imo-yokan, he shrinks to the size of a doll instead of growing. He and Grotch flee from Ichitaro and Mr. Tenma.
- Kyosuke Jinnai (陣内 恭介 Jinnai Kyōsuke): Yūji Kishi (岸 祐二 Kishi Yūji)
- Naoki Domon (土門 直樹 Domon Naoki): Yoshihiro Masujima (増島愛浩 Masujima Yoshihiro)
- Minoru Uesugi (上杉 実 Uesugi Minoru): Yoshihiro Fukuda (福田佳弘 Fukuda Yoshihiro)
- Natsumi Shinohara (志乃原 菜摘 Shinohara Natsumi): Yuka Motohashi (本橋 由香 Motohashi Yuka)
- Youko Yagami (八神 洋子 Yagami Yōko): Atsuko Kurusu (来栖あつこ Kurusu Atsuko)
- Hazardian Dapp (ハザード星人ダップ Hazādo Seijin Dappu, Voice): Mari Maruta (まるたまり Maruta Mari)
- Souichirou Tenma (天馬 総一郎 Tenma Souichirō): Ed Yamaguchi (エド山口 Edo Yamaguchi)
- Yoshie Tenma (天馬 良江 Tenma Yoshie): Yoshimi Iwasaki (岩崎良美 Iwasaki Yoshimi)
- Ichitarou Tenma (天馬 市太郎 Tenma Ichitarō): Ryuji Teraoka (寺岡龍治 Teraoka Ryūji)
- Beauty Zonnette (美女ゾンネット Bijo Zonnetto): Rika Nanase (七瀬理香 Nanase Rika)
- President Gynamo (総長ガイナモ Sōchō Gainamo, Voice): Hiroshi Ōtake (大竹 宏 Ōtake Hiroshi)
- Deputy Leader Zelmoda (副長ゼルモダ Fukuchō Zerumoda, Voice): Kyousei Tsukui (津久井 教生 Tsukui Kyōsei)
- Inventor Grotch (発明家グラッチ Hatsumeika Guracchi, Voice): Takashi Nagasako (長嶝 高士 Nagasako Takashi)
- Viewership: 5.4%
- Gekisou Sentai Carranger Volume 1 features episodes 1-12.
- The complete Carranger series was released in North America by Shout! Factory in 2017.