|This article is about a/an episode in Choujin Sentai Jetman.|
Sudden Hammer! (いきなりハンマー！ Ikinari Hanmā!) is the thirty-eighth episode of Choujin Sentai Jetman.
When the Jetman capture a Bio-Dimension Bug, a friend of Ryu's tries to take it for his own glory while Tranza tries to prevent its secrets from being known.
The Jetmen freeze a monster maker sent by Maria and take it to scientists to study. Tranza punishes Maria for allowing this to happen, and goes off to retrieve it with a monster that is a chameleon and a hammer. Its victims hear it, but don't see it. Ryu's old friend tries to steal the monster maker, but encounters Tranza. The chameleon monster is destroyed. It's hammer falls within reach of the other monster-maker, which recreates it. The Jetmen defeat it again and the two old friends make peace.
- Ryu Tendo (天堂 竜 Tendō Ryū): Kotaro Tanaka (田中 弘太郎 Tanaka Kotarō)
- Gai Yuki (結城 凱 Yūki Gai): Toshihide Wakamatsu (若松 俊秀 Wakamatsu Toshihide)
- Raita Ooishi (大石 雷太 Ōishi Raita): Ikko Tadano (ただの いっこ Tadano Ikko)
- Kaori Rokumeikan (鹿鳴館 香 Rokumeikan Kaori): Rika Kishida (岸田 里佳 Kishida Rika)
- Ako Hayasaka (早坂 アコ Hayasaka Ako): Sayuri Uchida (内田 さゆり Uchida Sayuri)
- Back Dimensional Count Radiguet (裏次元伯爵ラディゲ Urajigen Hakushaku Radige): Masaki Tachi (舘 正貴 Tachi Masaki)
- Maria (マリア Maria): Maho Maruyama (丸山 真歩 Maruyama Maho)
- Emperor Tranza (帝王トランザ Teiō Toranza): Yutaka Hirose (広瀬 裕 Hirose Yutaka)
- Grey (グレイ Gurei, Voice): Hideaki Kusaka (日下秀昭 Kusaka Hideaki)
- Laser Lizard (レーザートカゲ Rēzātokage, Voice): Toku Nishio (西尾徳 Nishio Toku)
- Yanagi: Haruki Hamada (浜田 治貴 Hamada Haruki)
- Prof. Taniguchi: Mikio Murakami (村上幹夫 Murakami Mikio)
- Haruki Hamada, who previously played Hiryuu Tsurugi (Change Dragon) in Dengeki Sentai Changeman, guest-appears in this episode as Yanagi.
Choujin Sentai Jetman Volume 4 features episodes 31-41.