In the first war against The Devourer, the Conquerors moved in on the Verdani people of Nilo, goat hoarders and thieves. They killed off their goats and left, taking and destroying everything. One member of the Verdani, Tembo, started a small resistance with other victims of the siege. They wore green cloaks to blend in with the grasslands of Nilo, which often messed with the Conquerors. Later, they were named the Greencloaks. Thus, the army of Greencloaks grew, more and more Marked people coming to join and fight against the Conquerors.
- Xue states that nowadays the Greencloaks have lost their touch. She even claims Olvan and Lenori were not the best students.
- The Greencloaks have monopoly over the nectar. When Tarik enters Monte and Barlow's trading post in Boulder City, someone says, "Go drink your Nectar!"
- Monte and Barlow broke their Greencloak vows to become explorers, but also because they didn't like the way the Greencloaks recruited kids.
- In The Book of Shane, when told about how a poison-dart frog's bright colors mean "stay away", Shane comments "Sort of like a Greencloak."