In return for letting it snow in Southtown, Heat Miser demands that he be allowed a day of warm weather at the North Pole. Didn't spending a day in Southtown cause Vixen to become terribly ill? Now all of Santa's reindeer are going to be exposed to that climate.
When Vixen, Jingle, and Jangle, were flying into Heat Miser's Territory, Vixen was hit by a blast from Heat Miser's heat blaster (or whatever it's called), what if that's the reason Vixen got terribly ill in Southtown
Another bit of Fridge Horror that's more of a Fridge Tear Jerker is this notable difference between the Miser Brothers' songs. Snow Miser's song goes "Friends call me Snow Miser", while Heat Miser's equivalent lyric is "They call me Heat Miser" Is a Green Christmas so unpopular that Heat Miser doesn't have any friends? That's kind of sad. No wonder he's always angry at his brother.
Possibly supported by the fact that he accuses Snow Miser of being Mother Nature's favorite.
Compared to Snow Miser who is fairly affable when he talks to Mrs. Clause and the rest, where as Heat Miser is more hostile, it is easy to see why Heat miser doesn't have any real friends.
"Whatever I touch, turns to snow/starts to melt in my clutch." Yeah....that is pretty much the epitome of fridge horror.
To be fair, though, Snow Miser can change the stuff he turns into snow back to its original form (he even demonstrates this) and we can assume the same is true of his brother. Plus, they're both Large Hams, so they might have just embellished this a bit.
Even so, it seems to need to leave his grasp for him to be able to return it to normal, so unless you can come up with a way to, say, make a phone call without touching the phone, it'd still be a serious handicap.
If you watch the songs closely, there are instances of both brothers touching objects without immediately transforming them, so clearly they have control over their powers. For example, Snow Miser holds both his hat and cane a couple lines into his song, and only demonstrates on his hat when he reaches the "Whatever I touch..." part. They both also hold thermometers for several seconds, and while their grasp could be what makes the mercury rise or fall, the devices remain intact during those parts.
The original 1974 special had Snow Miser and Heat Miser explicitly say that they are step-brothers, but the spinoff/sequel "A Miser Brothers Christmas" shows a flashback that depicts them as being fraternal twins since infancy. This may seem like a continuity error, but when you remember that the Miser Brothers hated each other, it becomes possible that the Miser Brothers simply hated each other so much that they pretend that they are not really related. Such a thing is not unheard of in real life cases of sibling rivalry.
Why are the masters of sun and ice referred to as misers? A miser is defined as a greedy or avaricious person. The Miser Brothers are the source of one of the films biggest dilemmas since neither wants to compromise with the other: they each want to hoard the territory they have, like misers.
A very noticeable if obvious one. Look at the personalities of Snow and Heat miser. Snow Miser is very cool, calm (for most of the part at least) and easy going while generally being friendly towards the group. Meanwhile Heat Miser is very hostile and angry towards the group and has a confrontational attitude towards them. Their weather perfectly represent the type of personalities they would have.
The Miser Brothers are introduced as being violently antagonistic to Jingle, Jangle, and Vixen, with Heat Miser going so far as to blast the trio out of the sky (or at least, try to). Yet when they appear later in the story they're perfectly cordial. Of course, by this point Mrs. Claus has personally gotten involved in saving Christmas, and she has a direct line of communication with Mother Nature (who the Misers are deathly afraid of). The Misers might be fine with bullying some elves, but there's no way they'd start a fight with a Claus!
When Santa becomes sick and decides not to deliver presents this year because of a lack of Christmas cheer, multiple papers report on the story. Despite this, apparently none of the children seem to care that Santa is sick because they're too old to believe in Santa. For that matter, why is the mayor of Southtown so incredulous that two elves should visit on Santa's behalf, if Santa's existence is well-known enough for papers to report about him?
There are real-life news sources that report about Santa, despite him not existing. I could see at least one government of a real-life country declaring a holiday for Santa.
When Jingle and Jangle visit the mayor to try and get Vixen out of the city pound, the mayor doesn't believe in elves, Santa, that their dog is a reindeer, or anything else Jingle and Jangle tell him. He does agree to believe them if they make it snow in Southtown, only doing so because he believes it is impossible. Immediately after, he goes outside and tells everyone that it is going to snow and there will be a white Christmas.
That whole song is likely sarcastic.
After Santa brings the sick Vixen home, he tucks her into bed with an ice pack on her head. But while the ice pack makes sense, isn't covering her with a blanket counterproductive? Since she got sick from being too hot, shouldn't Santa be trying to cool her down?
It's mentioned that Vixen had a bad fever, which isn't too uncommon a symptom when one gets the flu. She could be getting chills at the same time.
Mrs. Claus gives up her initial idea to dress up as Santa and deliver the presents in his place after Jingle and Jangle recognize her. But why should she need to disguise herself as Santa and fool people? Since the newspapers had already told the world that Santa was taking a holiday, why couldn't they just announce that his wife was taking his place this year?
Not only that, but she specifically says in her song that she'll only let people see her from the back. When Jingle and Jangle see her from the back and in Santa's costume, they're completely fooled, despite having known both the Clauses for ages: it's only when she turns around deliberately that they catch on.
