Ninja Heavy was initially a normal BLU Heavy who was on a team of particularly bad BLU Mercenaries. His team was gunned down by a small group of expert Snipers, just before he was taken down also, Ninja Spy showed up and defeated the mercs swiftly, in awe, the Heavy went to ask Ninja Spy and begged him to teach him how to be a ninja, in which the Spy promptly refused, however, he changed his mind after the Heavy offered a large pile of money. The newly created Ninja Heavy however, is rather inept and fails to perform with much competence, Ninja Spy, unable to get rid of him, keeps him as his apprentice.