Mixer Robo MR-36
The model was originally designed in Japan by Bandai and released for their Machine Robo Series line as Mixer Robo. Tonka's US rebranded Gobots distribution saw Block Head given his now most established name. The model was not released in Europe for Robo Machine or the Australian Machine Men selection.
Further details are below, on the Series 1 Index and for more in-depth reading see the Toy Line History page.
Region Codes Used: JP Japan / US United States / CA Canada / BRA Brazil / TWN Taiwan
NOTE: Region codes only shown where items were known to be released. This list is accurate yet likely incomplete.
Gobots 17 Series 2 US/CA Tonka 1984 ("Block Head" drum sticker and side windows and leg stickers not included with this release)
Machine Robo Series MR-36 JP Bandai 1984 ("Mixer Robo" drum sticker)
Convert BRA MIMO ("Robo Mix" drum sticker) 1985
Convertible Robots TWN [Blue in place of Red] (Mixer Robo sticker)
Not released for Robo Machine or Machine Men lines.