The actor and actress who voiced Mickey Mouse and Minnie Mouse were actually married to each other in real life — for nearly 20 years.
Wayne Allwine and Russi Taylor, who lent their voices to the roles of Mickey and Minnie, respectively, were together for almost two decades before Allwine died in 2009 at the age of 62. It wasn't until his passing that many people realized he and Taylor were happily married.
Source: Did You Know the Actors Who Voiced Mickey and Minnie Mouse Are Married?