Released 2003 (printed on the packaging) retailing for ¥3600 before tax. MSIA - Mobile Suit in Action : Mermaid and Nether Gundam double pack. The Mermaid is stamped 2002 on his leg whilst the Windmill has no date markings on him at all.
Yes I know... The Hurricane Gundam to US viewers of the show. Nether - is way funnier so get over it already... "Hurricane"??? that's almost cool sounding!
Something I neglected to mention in the video review, though you can see it... these Japan edition Mermaid and Nether Gundam MSIA figures are both nicely pre-panel lined in grey. I hear the US releases which were left clean (I don't have any American release MSIA myself)
Click on the image for jumbovision scan of the black and white Japanese language instructions describing the transformation of both those bizarre figures from the G Gundam show.
Out of these 2 chaps I'd say that despite is parts-forming transformation ... the Nethergundam's rotate-reveal head, fun free spinning sails, ceiling fan flight mode and better articulation all combine to beat the Fish guy who's only real gimmick is his multi-segmented tail and rotatable propeller.
Waiting in the wings, I have another member of the Brotherhood of Fail-Gundams pending review. Dun Dun DUNNNNNN!!!
Mermaid Gundam video review http://www.youtube.com/watch?v=i8mrA2dRKE0
Nether Gundam video review http://www.youtube.com/watch?v=eeeGFQJys2A