Gralleo was a Malleo clone that was exposed to fire flower radiation. He was then transformed into a Greature. He is the "brother" of Greegee. He died after the Martian War, but was revived into Gralleo II. However, he was revived 4 times before he actually got revived into Gralleo I again. He is one of the most popular Greatures in the Greegeeverse.