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Human Sign Blue in Assault! Human
Human Sign Red in Assault! Human
Targets Human No. 1, Human No. 2
(Transformation Device)

The Human-Signs (ヒューマンサイン,   Hyūmansain), Human-Sign Blue (ヒューマンサイン・ブルー,   Hyūmansain Burū) and Human Sign-Red (ヒューマンサイン・レッド,   Hyūmansain Reddo) are transformation devices given to children to transform Junichiro and Junjiro Iwaki into Human No. 1 and No. 2. They first appeared in the 1972 tokusatsu kaiju show, Assault! Human!!.


The Human-Signs are disc shaped, and colored to match the hero they transform (Human-Sign Blue being blue to correspond with Human No. 1, and Human-Sign Red being red to correspond with Human No. 2). Each one has an image of a Human mask, and just above it, a small hole is visible. A operator's finger or a rod would be put through said hole and spun during the show to transform the Humans.


Assault! Human!!

At the beginning of the Assault! Human!! live show, Human-Sign Blues were passed out to the children in the crowd. If Junichiro Iwaki was in trouble during the show, the children would be cued to spin their Human-Sings, which would allow him to transform into Human No. 1. After episode 9, when the Human No. 2 character was introduced, Human-Sign Reds would be passed as well as the blues to transform both Humans.



  • Children given the Human-Signs were allowed to take them home as souvenirs.


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