Storyline (during MK3 and MK4)
In the old city of the Elder Gods, had two brothers born of thunder: Raiden and Ruiden. During the time, Ruiden became a avenger, and was banished to Netherrealm by the Fire God. In Netherrealm, he finds a apprentice, a girl called Samatara.
She become a skilled girl, until the time of she betray Ruiden. She goes to the Forces of Light to fight with them in the battle (Good vs. Evil). But before it, she stolen a precious diamond in the City of the Elder Gods. This diamond is the key to all the Raiden's plans. Alone in the Nethrrealm, Scorpion goes to talk with Ruiden about he join Shao Kahn. Ruiden accepts. Anyway, he let the Raiden Diamond fall in the fire of Netherrealm, and them letting Kahn brave. The only way to make he prove himself is killing the God of Thunder. Ruiden sends a mental message to Raiden's mind, to he know about the dealdy fight, in the old Portal, used by Shang Tsung to go to Earthrrealm. Raiden cannot do nothing, only face his brother, The Avenger. Three days later, Raiden goes to the old Portal to face his brother in Mortal Kombat. They fight was quickly, and in the ned, no one dies. Ruiden back to the Shao Kahn Fortress. During the half-night, Samatara tries to invade Kahn Fortress by the Principal Bridge, but she was killed by Mileena. Mileena takes Samatara, and throw she in the Shang Tsung Flesh Pits. One hour later, she backs to injure Samatara corpse and eat it. During this time, Ruiden put fire in the Shaolin Academy. Raiden was there to confront Ruiden specially in Kombat. A little time later, Raiden throws Ruiden in the fire, to no one remember he any longer. Moves coming tomorrow! :D