Another blast from the past is surfin' theme Sonic here. He looks like he might be yet another varient from the Summer Time Sonic Plush collection on this page...but notice the different glasses and surf board.
Japan did several themed sets back when there were not so many characters to help boost sales of 'different' plushes. The important thing is, they've done a MUCH better job of it than ToyNetwork.
Additional Info
- Region: Unknown