Vilmer was an airship mechanic and former scientist for the cabal who lived in Yado Village. He fled to the island with his granddaughter to escape from White House. He would build an airship research laboratory and help bring prosperity to the people in Yado.
Vilmer was a respected scientist who began to work with an organization known as the Chimera Research Lab, researching monsters during his time here Vilmer would climb the ladder and become ranked as on of their chief scientists. Eventually Vilmer would learn that he was actually working for a criminal organization known as The Cabal directly underneath the Romalian empire and his research was being used on children after this Vilmer escapes from White House ans moves to the remote Yagos Isle and builds an Airship laboratory there in Yado Village.