* {{Blooper}}: Santa's sleigh is supposed to have eight reindeer pulling it (Dasher, Dancer, etc.), which would make 9 total when Rudolph is with them. But when we see the sleigh being pulled at the end, including Rudolph, there are only seven.
** The producers said they didn't have the budget to make eight reindeer.
* CrossDressingVoices: The titular character was voiced by Billie Mae Richards, who was ironically credited as Billy Richards from 1965 onward, as mentioned in obituaries mourning her death in September 2010.
** In the 1998 movie, Rudolph is voiced by [[Creator/{{Kathleen Barr}} Wheezie, Dot Matrix, and Kevin]] (until he sings, anyway).
* [[HeyItsThatVoice Hey, It's That Voice!]]: Burl Ives as Sam the Snowman
** The reindeer games coach is Tennessee Tuxedo/Maxwell Smart/Inspector Gadget.
** ''Rudolph's Shiny New Year'' features Red Skelton and [[Series/{{Batman}} Frank Gorshin]]. This is lampshaded by Skelton, who mentions at one point how red his hair used to be. And you'll spend the whole special waiting for Sir 1023 to start saying "Riddle me this!"
** [[Film/{{Spaceballs}} Dark Helmet]] went from stealing air from a nearby planet to stealing toys from Santa's workshop in ''The Island of Misfit Toys''.
** [[WesternAnimation/SpiderMan1967 Hermey is Spider-Man, Donner is J. Jonah Jameson, Rudolph is Billy Conners and the Head Elf is the Scorpion]].
** The Good Times film gives us:
*** [[MyLittlePonyFriendshipIsMagic The Great and Powerful Trixie]] as Rudolph.
*** [[{{Roseanne}} Dan Conner]] as Santa.
*** [[SingingInTheRain Kathy Selden]] as Mitzi and Mrs. Claus.
*** WhoopiGoldberg as Stormella.
*** EricIdle as Slyly.
*** [[SonicUnderground Dr. Robotnik]] as Blitzen.
*** [[MyLittlePonyFriendshipIsMagic Snips]] as Vixen.
*** [[EdEddNEddy Ed]] as Arrow and Donner.
*** [[MyLittlePonyFriendshipIsMagic Spike]] as Sparkle.
*** [[RatchetAndClank Clank]] as Cupid.
* WhatCouldHaveBeen: Early drafts included a DeliveryStork, but when the idea of a CelebrityVoiceActor (Burl Ives) as the narrator was introduced, the stork was cut for time.
* WordOfGod: Many wondered what made the doll a misfit. It was revealed decades later in a talk show when Arthur Rankin, Jr., said her problem was psychological, from feeling unloved.
** Jules Bass is quoted as saying "I dunno. Maybe she was an alcoholic or something?"
** It's clearly because she was [[RedHeadedStepchild a ginger]].