We’re getting close to the end of May, but Transformers May Mayhem is clearly still on a roll as the deluxe Transformers Combiner Wars Groove figure is now available in the US. For last year’s May Mayhem your Quickslinger and Break-Neck brought some G1 goodness to your Superion and Menasor…and this years it’s Defensor’s turn. So far Groove is available (and in stock) at AwesomeToyBlog sponsor Entertainment Earth ($17.99), but also look for him at other retailers including Big Bad Toy Store, Amazon and others.