voice actor screwup

Martin Roach (Reginald Manderbelt) is credited as the voice of the The Widow but she sounds more like Cousin Vern voiced by Patrick McKenna. And who voices the other Maderbelt son Vaughn and the Japanese Guy. And they only list the main cast but not the guest stars such as the Widow's husband and the guy in "Less Than 127 Hours". It seems they slapped together the credits once and just recycled them for every episode.