FAQ: Metal Storm website
Officially, it's a "Metal Hero", but those who notice a resemblance to Alexi Laiho would be correct. This is not to imply that Laiho is a "metal hero", that is too fat of a claim. However, one of his pictures was epic enough to be used as a model for an abstract mascot, which we refer to as "Metal Hero". So, if you lack imagination, you can say it's Laiho, or you can say it's an everyman metal musician, both would be true.