Wyvron W6 is an Energy Layer released by Hasbro as part of the Burst System as well as the SpeedStorm System. It debuted in western countries with the release of the SpeedStorm Single Pack Wyvron W6 Yell Needling-SP.
Hasbro's Wyvron W6 has slopes that give it significantly more Burst Resistance than Takara Tomy's Wild Wyvern. However the square shape still makes this Layer unsuitable for Defense and the Burst Resistance lags behind other Layers such as Unicrest and Kerbeus K2.
As such, Hasbro's Wyvron W6 is recommended for collection purposes only.