RaiJin and FuJin
RaiJin and FuJin are often considered brothers though this may not always be the case, they are deeply connected. Normally you would see them depicted together. In tattooing you often see them each on a serparate arm or leg or rib section for instance.
RaiJin
Attributes: Warrior, Protector, Life, Destruction, Chaos, Thunder, Lightening, Drums, God of Thunder
He has a terrifying, toothy and sinister grin, lean muscular body, red skin, unruly hair and
Raijin is depicted with a very fearsome appearance, he is considered a trickster who can bring both good in the form of rain, and destructive storms as well.
Raijin is the Japanese God of Thunder, a chaotic being born of death who brings the world vital rains as well as chaos and destruction. He flies across the sky on dark clouds and throws lightning onto unsuspecting denizens below.
A popular kami (a type of god or spirit in the Shinto religion) despite his connection to death and destruction, Raijin is represented in Shinto and Buddhist imagery, as well as in folk belief and popular art.
He is also the protector of temples and shrines. In Shinto and Buddhism, Raijin is a warrior-protector who brings both destruction and life, illustrating how the two are deeply connected. It is said that Raijin’s lightning, when it struck a crop, would produce a bountiful yield.
Raijin is more a trickster than a malevolent figure.
Fujin
Attributes: Wind, Chaos, Spirit Keeper, Storms, God of Wind
Fujin is a well-depicted oni who is also sometimes treated as a kami (a type of god or spirit in the Shinto religion). With green skin and wind-disheveled red-white hair, his monstrous face is like that of a hungry ogre with eyes that are wide and fearful.
He wears a leopard skin, and around his shoulders is a large bag of air, which he uses to propel himself around the world, which in turn creates the world’s winds and storms. Fujin rides on a cloud, alternately depicted as a gray storm cloud or a fluffy cumulus. Each of his hands has four fingers, one per cardinal direction.
As god of the wind, Fujin is always on the move and seemingly ever-present, but he is said to be primarily visible during storms, particularly powerful typhoons, where the winds can fell trees and destroy houses. Although Fujin is seen mostly as a destructive force, he can also be associated with less intense winds that are gentle and refreshing. Therefore, compared to his brother Raijin, Fujin is somewhat less intense.
Source: https://mythopedia.com/