D-6 is a villain of Fairy Tail. He is a member of the Avatar cult.
D-6 is a large figure in an armor.
Along with other major Avatar members, D-6 appears in the meeting. Later, he appears along with other Avatar elites, who discuss about Gray being the traitor. D-6 then remarks they know each other for a half year. When Natsu and Lucy invade the Avatar guild, D-6 tries to ambush Natsu, but is defeated in a single blow.
When Operation Purification starts, D-6 stands with other members and watches minor Avatar members getting beaten.
After Ikusa-Tsunagi is destroyed, D-6 along with Abel attempt to get their members to Malva town, but are defeated by Gajeel and Pantherlily.