Shiju is a member of Uruha Maboroshii. There wasn't really any background information about Shiju, except that he has had a lion's DNA implanted inside him by Genjuro, which allows him to change into a lion-like creature. Genjuro calls him a chimera. Shiju has a very nasty habit of eating his opponent's corpses. He is defeated by Kaoru Koganei. He has a much more humanoid appearance in the manga that can sprout a large number of spike and increases the size of his fangs and claws. He was voiced by Eiji Itō in the original Japanese version.
In the manga, he is call 'Shijo', instead of 'Shiju'.