Vipero is a wyvern that first appeared in Dragonheart 4: Battle for the Heartfire, but only in a mural. He is one of the seven dragons to be raised in Britannia by the venerable Drago.
Vipero's name is the combination of viper and "o". Viper preluding to his snake like appearance, while the "o" is a common ending for masculine names in Italian, preluding more that Vipero might be male.