First appear in volume 0 and again at volume 1, he comes from another dimension that is close to ours. The world they lived in values water higher than items. In their world, they are ruled by Rock who is also king in another dimension. All the people in Ie world have limit resource as well as limit space in their galaxy, Rock took all of them with his robot army. In a trade deal for water Ie and Thu are accidently sent into Sri world, Sri help them by sending them to earth that holds 1000x more water than in their dimension. However the help Sri give as cause Rock to summon Ie to tell all about earth and the dimension as an unlimited resource and supply area.
Its unclear what his power is but he does seem to understand everyone language.