Dana

Dr. Dana (ダナ先生) is a doctor who works at Dalmary Town. He helps treating Meliodas who was injured by Gilthunder in the Forest of White Dreams.

Baste Dungeon
Meliodas was brought to Dr. Dana in order to heal the wound he received from Gilthunder. The doctor started treating his wound and was surprised that he is still alive after such serious sword wound, which also have some sort of lighting burn. He later gave Meliodas a special medicine he prepared and soon after that he was thanked by Golgius for that. The truth was that this is no medicine, but a deadly poison mixed from Wolfsbane, Belladonna, Tiger Beetle, Henbane Leaf, and Meliodas shouldn't be waking up anymore.