Arthur

Arthur was originally a Matoran living on Tapio's Original Homeland. He met Tapio in a school and became friends with him. When Inwirn forced Tapio to migrate from his original homeland, Arthur was one of his friends to go with him.

In Bio-Land, Arthur and the rest of Tapio's friends got separated and each of them went their own ways. Arthur became and engineer. But in Tonga's Attack, Tapio tracked him down and asked him to come to the adventure with him. Arthur agreed and used his knowledge about machinery to help his friends in any ways. After the last battle, Arthur went his own way again.

Arthur was captured by Inwirn in War of the Clones, like almost all of the Matoran. Arthur was kept a prisoner but was freed by the large army that Henkka had formed from Matoran all over the world.

Arthur was also mutated by the Spiders of Doom in Invasion of the Spiders of Doom. The Mask of Reality undid the mutations, it was part of the Tapio's Mistakes.

Currently Arthur is a happy Matoran living on Tofug City, building machinery and working on new inventions.