Ice Viper v4 was released as part of the 2014 G.I.Joe 50th Anniversary Series. He was the driver of the Cobra W.O.L.F. ( Winter Operational Light Fighting Vehicle ), packaged with a Snake Eyes v68 and his Ghost Hawk in the Battle Below Zero set. Although Snake Eyes is equally known as a ninja and as a commando, the 2 sai included in the box set belong to the Ice Viper. Note that this version of Ice Viper is spelled as 2 words without a hyphen.
Many collectors complained about paint quality issues with the 50th Anniversary line. If you're looking to get one in mint shape, get great shots of the paint from multiple angles, even on figures still sealed inside their bubbles.