Ra-Seru look like stone figure, though they have some differences in appearance from the typical Seru. Most Ra-Seru are quite small, being about the size of a small hand or a forearm. However, they are able to grow in size and change their shape by harnessing power from a revived Genesis Tree. Most Ra-Seru have a jewel fixed within its body, though there are some (like Ozma) that don't appear to have one. Some have bodies that are horizontally shaped and some are vertically built, but all Ra-Seru have a glossy shine. The Ra-Seru correspond to different elements found throughout nature and are usually color-coded with that element (i.e., Meta is a fire Ra-Seru and its body is mainly red).