Beastmaster is a job class available to members of the Nessing race and Humans from Germanistan in many RPs Eden-IV nations take part. It had also been a character specialisation in the Cybergoddess Advanced RP.
Germanistan beastmasters are members of the armed forces chosen for their latent psionic capabilities and given a basic training in telepathy. They are given the task of controling the nation's animal-based weaponry (Blitzpanzers and Cormerra Nori) and are very precious to the army, so they are never used as regular infantry.
Nessing beastmasters are specialised on communicating with the Gigarachnis Edenia, the Edenian Grandspider, which the Nessing rely on to keep subterranean insect colonies at bay.