Drakon

Drakon (Russian: Дракон) is a Russian arms dealer and Vorona's father. He and his comrade Lingerin Douglanikov are joint leaders of a Russian organization dealing in weapons.

Toramaru Arc
Drakon orders Egor to track down Vorona and Slon to recapture them and the weapons they have stolen. Later, Drakon, Lingerin, and their henchmen attack the headquarters of an organization in Russia who took some of their weapons, and they discuss Vorona afterward.

Several days later, it is revealed that he has agreed to sell weapons at a significant discount to the Awakusu-kai under the condition they not harm his daughter.

Trivia

 * Дракон is the Russian word for "dragon."
 * His real name is never stated, and 'Drakon' is revealed early on to be an alias.