Action Mask (Action Bastard/Action Kamen/Masked Muchacho) (アクション仮面 Akushon Kamen) is the favorite TV show and toy of Shin Chan starring an masked hero with the same name. Shin Chan has a lot of toys, books etc that are based on Action Kamen.
Shin Chan usually sees this show, and if not, he usually records it. Action Mask has its own manga spin-off.
The arch rival of Action Mask is MekeMeke Z, supreme leader of the Black MekeMeke Group. After several seasons, finally the Army and its leader are completely defeated, thus showing another main villain: Eagle Head, the ill-fated brother of Mimiko Sakura. Once defeated, the main bad guy becomes the Count Flower, played by a handsome actor.
From manga volume 41 on a sequel of the series appears, carried out by Misato Yashio (八潮 ミサト), the daughter of Gō Tarō, who transforms putting on a special bra.
Black MekeMeke Group (ブラックメケメケ団)
- MekeMeke Z is the supreme leader of the Black MekeMeke Group, and the main antagonist of the series in many episodes.
- Mekemeke X and Mekemeke Y. It is unknown exactly what they are. They may be siblings of General MekeMeke Z, or even the same person.
- The four kings of darkness: Beauty Destroyer, the General Chimpan Monkey, Diridiri, General Mantis and Sumisumi, Leader of the Iguanas. They are the four men of confidence of General Mekemeke.
- An indeterminable number of servants, whose face appears as an letter B.
- Yankiki, Crazy Bikers Leader
Sparrow Group (秘密結社スズメノナミダ)
- Eagle Head is the most visible face of the new society that tries to end the coastal cities causing tsunamis. He's Mimiko's older brother.
- Ranpopo is a secret identity under which Eagle Head hides.
- Zoinbak is the leader of the Sparrow Group.
Other enemies (その他の敵)
- Count Flower is played by a handsome young actor, who draws much attention of women in the series.
- Dark Shadow is physically very similar to Masao.
- The Beast of Prices
- Mysterious Digi Mask
- Masked Highness
- General Dog