Hank Azaria voiced both Gary Chalmers and his twin brother, Police Superintendent Chalmers, Bart originally had a twin brother named Hugo, and Homer had a twin half-brother named Herbert Powell in “Oh, Brother Where Art Thou” and “Brother, Can You Spare Two Dimes” which Herbert is voiced by Danny DeVito.
Proof that the Halloween Specials are non-canonical.
“It is OK to be someone you really are and pretend to be someone you’re really not.” John Lennon
“I’m a loser and I’m not what I appear to be.”
Hugo: “I am going to sew us back together to re-conjoin us.”
Hank Azaria voiced both Gary Chalmers and his twin brother, Police Superintendent Chalmers, Bart originally had a twin brother named Hugo, and Homer had a twin half-brother named Herbert Powell in “Oh, Brother Where Art Thou” and “Brother, Can You Spare Two Dimes” which Herbert is voiced by Danny DeVito.