No SF Robot (Retro future)
Timeline for IMAI (401) Robot Series No.1 Big Thunder
Full history
IMAI
Midori
Doyusha
Kogure
Bandai
Yodel
Bull Mark
1962
1964
1965
1966
1967
1968
1969
196x
1970
1971
1974
1976
197x
1981
1984
Missing info
Kits are shown on the timeline when year and origin are filled in.