|This article is about a/an episode in Battle Fever J.|
Be Careful of the First Love Thief (初恋泥棒にご用心 Hatsukoi Dorobō ni Goyō Kokoro) is the twenty-seventh episode of Battle Fever J.
Egos uses the feelings of Tomoko's little sister as a means to try to discover and destroy Battle Fever's secret base.
Egos targets the young Yuki, sister of Battle Fever support operator, Tomoko. They build a handsome young android, named Takeshi to seduce her. She finds meets him sitting by the seashore blowing a shell, and is instantly captivated by him. He gives her a shell pendant to wear and impresses her with his diving ability. Later she meets him in the park, where he sketches her. When she invites him back to her place for a melon, Takeshi secrets plants a transmitter in Tomoko’s lipstick. Tracing the signal, Egos finds one of the secret entrances to Battle Fever’s base. But with automated defenses, and a sliding wall, they are able to divert the assault squad out to the ocean. Once they are defeated, Battle Fever discovers the transmitter and deduce Takeshi’s involvement. The completely smitten Yuki won’t believe them, and secretly rendezvous with him. When Battle Fever confronts him, he threatens her life. Luckily, Kyosuke is able to save her. But he switches the shell pendant with a bomb that she takes back into Battle Fever’s base. This time, it is the robot mynah Kyutaro who detects the bomb just in time. Leaving Kyosuke and Tomoko to tend to Yuki’s broken heart.
- Masao Den (伝正夫 Den Masao): Kouki Tanioka (谷岡弘規 Tanioka Kōki)
- Kensaku Shiraishi (白石 謙作 Shiraishi Kensaku): Yukio Itou (伊藤幸雄 Itō Yukio)
- Kyousuke Shida (志田 京介 Shida Kyōsuke): Yuuhei Kurachi (倉知 雄平 Kurachi Yūhei)
- Shirou Akebono (曙四郎 Akebono Shirō): Kenji Ohba (大葉 健二 Ōba Kenji)
- Maria Nagisa (汀マリア Nagisa Maria): Naomi Hagi (萩奈穂美 Hagi Naomi)
- General Tetsuzan Kurama (倉間鉄山 Kurama Tetsuzan): Chiyonosuke Azuma (東千代之介 Azuma Chiyonosuke)
- Keiko Nakahara (中原ケイコ Nakahara Keiko): Noriko Hidaka (日高 のり子 Hidaka Noriko)
- Tomoko Ueno (上野トモコ Ueno Tomoko): Keiko Kanno (菅野啓子 Kanno Keiko)
- Masaru Nakahara (中原マサル Nakahara Masaru): Takumi Sato (佐藤たくみ Satō Takumi)
- Commander Hedder (ヘッダー指揮官 Heddā Shikikan): Masashi Ishibashi (石橋雅史 Ishibashi Masashi)
- Salomé (サロメ Sarome): Maki Ueda (マキ上田)
- Satan Egos (サタンエゴス Satan Egosu, Voice): Shōzō Iizuka (飯塚 昭三 Iizuka Shōzō)
- Black Mask Monster (黒仮面怪人 Kurokamen Kaijin, Voice): Seizō Katō (加藤 精三 Katō Seizō)
- Takeshi: Masanoyuki Urasaki (浦崎真之夫 Urasaki Masanoyuki)
- Yuki Ueno (上野ユキ Ueno Yuki): Michiyo Sato (佐藤三千代 Satō Michiyo)
- Battle Japan: Kazuo Niibori
- Battle Cossack: Hirofumi Koga
- Battle France: Haruhiko Hashimoto
- Battle Kenya: Tsutomu Kitagawa
- Miss America: Eiko Onodera
Battle Fever J Volume 3 features episodes 23-33.