After huge increase of ork population on the Agri-World Agricus-X745, he Tactica Imperium decide that they would lose too many troops if htey tried taking back the planet. So they decided that they would drop a virus bomb on the planet to kill not only the orks but sadly, also the farmers. But the scientist that desighned this bomb made a miniscule mistake in their mutation of this scientificly engineered epidemic. This virus was made to mutate every brain cell in a human or orks body into a kind of cell that no longer works. After the bomb was dropped on the planet, the virus was 99.9% successful. But that 0.1% became one of hte Imperiums worst enemies. One ork survived. The reason for this is that the orks brain cells got mutated into something better than his normal brain cells. He now heals faster, can hold his breath longer, has a better imune system, and is very, very smart. An intelligent Ork, somehting that the Imperium never expected. After that, the one smart Ork started rallying up orks by building space craft that could take energy from most biological things. He planted trees inside the space craft that allowed it to suck energy from these planets and use the energy for hyper-drive. After the hyper drive is used the plants are reduced to a brown mush. But the Orange Mek found out that the Bio-matter collected by Tyranids were a great fuel for his ship so he is on lookout for hordes of Gene-Stealers. In Hyper drive his ship can reach a speed of 1 light-year per second. It still took this ork quite a long time to reach the ork colonies of the outer rim but he did and started converting them away from the religon of Gork and Mork, and telling them that they should fight for Galactical Domination. Many other orks fought against the Orange Tide, but many died trying. One of the many armies that are trying to destroy this tide are the infamous Ghazghkull Thraka. Ghazghkull and his army hate the Mek of the Orange Tide (obivously) and kills any Orange soldier on the spot. Some Orks have enough sense to join the Orange Tide, Kaptin Badrukk is one example.