If any of you have played Mother 3 (which i highly suggest to play before you read, download the emulator or rom) you would know Claus lucas' brother, if any of you are wondering you can go here [you must login to view links] or look at this. (half of the story)

It is later revealed that while he was missing for three years, he was taken in by the Pigmasks at some point and was brainwashed and reconstructed. He became the Masked Man, commander of the army, and was Porky's loyal "robot". Porky then uses him to pull the Seven Needles, a crucial part in his plan to destroy the world. During a long battle with his brother, fighting over the final Needle, the ghost of Hinawa appears. She urges him to stop fighting, and reminds him that he's not Porky's robot, but Claus, her son. He finally recalls his former identity, and commits suicide to join his mother in the afterlife