SerialHeated was a free-to-play player who achieved 200 million Mining experience in RuneScape by mining mostly coal. Much controversy surrounds SerialHeated as he was very quiet during his time as a player, leading many to believe that he was a bot. At some point during his RuneScape career he was banned by Jagex, presumably for botting, however the ban was lifted.
In addition to his mining career, SerialHeated also has at least 143 million Smithing experience as of 2011.