This monster is considered to be the Sacred Beast incarnate of the Egyptian God card "Obelisk the Tormentor", noted by this monster's blue color, humanoid appearance, and similar ATK-gaining anime effects.
Like Obelisk's anime effect, this card also possess an effect to tribute monster to increase its attack power.
The Sacred Beasts are named after angels in Judeo-Christianity. This card's name is an alternate spelling of the name of Raziel.
According to a Pojo post by Dan Scheidegger (an Upper Deck Entertainment employee), this card was originally approved to have "Genma" in its TCG name, but a 3rd company decided "they didn't like the word."
In another Pojo post, Dan further explained that this was not for censorship reasons, but rather because the company did not think the name was "cool enough."