Rage Naga is a variant of Naga that was created by Jason, by using the data of the original Naga, and by collecting energy from many battles, Jason was able to create Rage Naga, for one purpose; to cure his sister Aria of a mysterious illness (though he initially claimed it was for world domination). Rage Naga is able to cure disease and illness thanks to the sheer amount of power used in its creation, combined with its absorbing properties. To be more correct, Rage Naga 'takes' the disease from victims.