[3] Forest was born in Harvey, North Dakota and moved with his family at a very early age to Seattle, Washington.

[1] At age 71, Forest voiced Prince Olympius in Power Rangers Lightspeed Rescue.

In his earlier years, he was a film and television actor, notably playing Apollo in the 1967 Star Trek episode "Who Mourns for Adonais?"

He again played that role in the Star Trek Continues episode "Pilgrim of Eternity", almost 46 years later, with his wife, actress Diana Hale.

He also appeared as a priest in a case of mistaken identity on a 1964 episode of The Dick Van Dyke Show.