Jumbo Machinder (ジャンボマシンダー, Janbo Mashindā) is the name of a series of large-scale plastic robots sold by Bandai's character toy subsidiary, Popy in the 1970s.
Although a trademarked brand name, in common usage Jumbo Machinder is often applied to any large-size robot toy roto molded out of polyethylene terephthalate (PET), a sturdy plastic also used for shampoo bottles.
After Popy's success with the Jumbo Machinder series, several other Japanese companies, including Takatoku, Nakajima, and Clover began producing large-size plastic robot toys as well.
Unlike their predecessors, the Giant Robot Factory toys were sold disassembled, allowing children to bolt the characters together with a simple tool provided in the package.
Giant Robot Factory branded characters include: Beginning in 1981, Popy Toy changed the name of the series to "Super Jumbo Machinder."
Characters released under this brand name include: A new line of modern Jumbo Machinders in debuting 2009, gearing towards adult collectors at a fairly high price.