Sully Snowdon  

Spencer Hale, シュリー・スノードン

His wife left him, but in the dub this was changed to her disappearing when looking for Unown, a project he was a part of as well. One day, as he explored an ancient building with his assistant Schuyler, he too vanished into the alternate dimension of the mysterious creatures. His daughter was sad because he didnt return, so the Unown created an illusionary Entei to be her father. He returned later, as did his wife, after the Unowns influence over Molly ended. Spencer is good friends with Delia Ketchum, and they were both students of Professor Oak. Bulbapedia