All marosapiens have the ability to shift from their humanoid form into a hulking form of their animal type, but these transformations demand constant nourishment and require a significant amount of training to gain enough control to master the additional three forms: savage, bestial, and natural. Those who can achieve all five forms typically exist within a humanoid form, are able display specific animal characteristics in a savage form, take advantage of both natures in a hybrid bestial form, assume a hulking animal form, or slyly adopt the standard sized natural form of their animal type. Each form has specific advantages and can be achieved with, and are detailed within, the Therianthropy proficiency.
The last species created as the war with the hivryn was waning, the rodimaro were envisioned for a special forces type role and included several animal types such as badger, ferret, rat, and weasel, among others. By far the most physically and emotionally stable of the marosapien, they live in small communities, segregated from the others on Muru, though the majority of their population can be found out among the galactic community living as terasapiens. The rodimari are very secretive about their nature and share it only with those whom they trust implicitly, which does not come easy for them.