Submarine Robo MR-33
This model was originally designed in Japan by Bandai and released for their Machine Robo Series line Submarine Robo. By this time Tonka's successful rebranding to 'Gobots' and US distribution saw the now more established name 'Dive Dive' applied and adopted for Robo Machine in Europe* and the Australian Machine Men release; predominantly to benefit from the Challenge of the Gobots cartoon. Multilingual Robo Machine cardbacks display both Dive Dive and Sous Marin in the name section. Machine Men originally released as Submarine Man were reissued as Dive Dive.
* The Robo Machine blister card showed Dive-Dive with a hyphen on the front and without on the rear.
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 / AU Australia / EU Europe / TWN Taiwan
NOTE: Region codes only shown where items were known to be released. This list is accurate yet likely incomplete.
Gobots 15 Series 2 US/CA Tonka 1984 (torpedo tube stickers not induced)
Gobots 15 Series 2 US/CA Tonka with 3-D Sticker 1984 (torpedo tube stickers not induced)
Gobots Guardian Gift Pack #2 US Tonka 1984
Robo Machine RM-33 EU Bandai 1984*
Robo Machines EU Bandai (claimed to have been released but unconfirmed - does not appear on cardbacks) 1993*
Machine Men AU Bandai 1984*
Machine Robo Series MR-33 JP Bandai 1983 (US Navy Stickers)*
Trans Mobots - Robots Strike Force TWN
Changeable Robot 2 In 1 - same body colour and sculpt as SHARK-O (darker stickers)
Unknown origin with no stamping [Pink] (unconfirmed stickers)
Convertible Robots - same grey body colour and sculpt as SHARK-O (unconfirmed stickers with this release)
Unknown Release - same body colour and sculpt as SHARK-O with a variant head (unconfirmed stickers with this release)
Machine Robo Series Bootleg [Blue] (Modified MR-37 Stickers) Sold on both cardback and in Machine Robo Series shaped boxes.
Unknown origin with no stamping [Black]
Unknown origin with no stamping [Blue]
* Machine Robo Series or modified for Robo Machines extra sticker sheet issued with this release.
Grey Shark-O style bootleg variant head sculpt example.