I remember my brothers used to own Giant Robot erasers that were huge in Japan and the U.S.A. back in the 1980s/early 1990s.They came in all different colors of the rainbow and you could put them on your pencil since they were pencil toppers.I think some of the mechas were Gundam knockoffs too since Gundam knockoff toys were huge in the U.S.A. and the European market back in the 1980s. :)

Does anyone know about those?. :unsure:

I recall having pencil topper erasers in all kinds of shapes and forms, but nothing specific. I wonder if your brother's know what they are called or who made them. I'd like to know.