It's said that storms start when these dragons fly though clouds as they soar high in the sky, crackling with crimson lightning. Thunder is said to be their roars.In-game description
The Indra is the Stage 2 magic form of the Storm group.
Indras cannot be found in the wild. They are not used by any enemy signers, except for those participating in the Random Tournament.
An Indra can be evolved from an Inkus. In the alpha version it cannot evolve again.