Created on ancient times by a mythical wizard named Jadu who fought to save the planet from threats, Reeve was one of the the final works of this wizard to continue his ideals. He was originally named World by this wizard, and was made to protect the earth and aid in its grander scheme of evolution and ecosystem. He has other warforged siblings that aid on different goals and are spread out on the planet.
As years went by and his creator passed away, he joined a secluded community of druids that travelled the world and shared his ideals, and stayed with them for centuries to aid forests,persons animals in need, as well as possible threats in the vicinity; this group eventually changed his name to the current one. He believes everything is connected and is part of a plan in the scheme of life, and thus follows what he believes is best to carry this out.
Thanks to his warforged nature and druidic powers, he has the ability to transform into various animals and beasts to help his goals, but most specially he uses his access to feywild beasts thanks to his circle of dreams background. His standard/preferred shape is that of a centaur.