Microman is a toy line by Takara in Japan. In the US they were called Micronauts in '70s. Other toy lines grew from them such as the Transformers. A good site to learn about Microman is Microman Forever
This figure is based on their Material Force line. This is basically an undetailed artist's dummy. They come in a large number of base colors. There are three types. Micromen, MicroLady and MicroSister. The female figures have four different chest sizes (small, medium, large and porn star)
For Scorch I used a small chest size so the armor could fit over them.
You can typically pick them up off ebay for about $7. I always use the seller Zira28. She charges about $8 shipping and will typically arrive within three days of payment.