Vulcan Joseph

, famously known as the is an independent scientist.

Personality
Vulcan is a very skilled scientist, but much prefers to work alone, not responding to Haijima's requests for him to join their organisation.

Sixth arc
Vulcan first appeared when Shinra, Arthur and Iris showed up at his facility. When he heard Arthur shouting, he opened the entrance slightly, told them to leave, and threw soda cans at the two fire officers. He prepared to throw a third at a squealing Iris, but shut the door.

Trivia

 * Vulcan's name is a tribute to the god of fire Vulcan, including the fire of volcanoes, metalworking, and the forge in ancient Roman religion and myth.