Yomazu (ヨマズ, Yomazu) is one of the most powerful lesser-rank members of the Dark Guild, Grimoire Heart, serving under one of the Seven Kin of Purgatory, Caprico. He's partnered with Kawazu.

Across the Fiore kingdom, wizards join guilds and make their pay by filling magical needs—but one guild has a reputation as the roughest, rowdiest, most dangerous of all: Fairy Tail! 
When four young Fairy Tail members unite, their bond is forged by a power found in neither muscle nor magic and grows stronger with every mission. Whatever you do, don't mess with these friends or you'll get a taste of Natsu's flaming fist or Gray's ice hammer, suffer a painful blow from one of Lucy's celestial spirits or catch the edge of Erza's mighty blade! Whether they're stopping demons from devastating the world or wrestling in the mess hall, this mystical team manages to inflict as much damage to their rivals as they do to the surrounding area! 
 
(Source: Funimation)

He is a voice actor (seiyuu) affiliated with Power Rise, previously was affiliated with Tori Tori Office. His old name is Sasaki Daisuke. 

[Profile](http://www.power-rise.jp/kageura_daisuke.html) | [Wiki (jp)](https://ja.wikipedia.org/wiki/%E6%99%AF%E6%B5%A6%E5%A4%A7%E8%BC%94)

The Grand Magic Games reaches its climax following Natsu Dragneel and Gajeel Redfox's stunning victory over Sting Eucliffe and Rogue Cheney of the Sabertooth guild. This success pushes the Fairy Tail guild closer to being crowned the overall champions, but obtaining victory isn't the only challenge they face. A mystery still surrounds a hooded stranger and the ominous Eclipse Gate, leaving more questions than answers. More crazy adventures are on the horizon for Fairy Tail as their destructive antics and joyful rowdiness continue unabated. Their greatest trial is quickly approaching, but united as a family, the guild will always be ready to face any threat that comes their way.

Cute girl wizard Lucy wants to join the Fairy Tail, a club for the most powerful wizards. But instead her ambitions land her in the clutches of a gang of unsavory pirates led by a devious magician. Her only hope is Natsu, a strange boy she happens to meet on her travels. Natsu’s not your typical hero—he gets motion sickness, eats like a pig, and his best friend is a talking cat. With friends like this, is Lucy better off with her enemies?
 
(Source: Kodansha USA)
 
Note: Includes 4 extra chapters.