"Eater": Duane Mellor is a Cajun murderer and "Eater" who was arrested for torturing, murdering and eating vast amounts of innocent people, often keeping them alive for days so he could cut pieces off and eat them. Once captured, Mellor waits until the graveyard shift before using a voodoo ritual, devouring the souls of several officers with their hearts to take their forms and play a sadistic game of cat and mouse with the young female rookie cop on duty, solely because he enjoyed frightening his targets. When his patience is exhausted, Mellor simply goes for the kill.
"Something with Bite": Forest J. Caldwell, aka the Beast Killer, is a man obsessed with werewolves and becoming one, and stands in stark contrast with the benevolent werewolves seen in this episode. Donning a makeshift werewolf outfit, he goes around killing multiple people across the city in a manner which is mistaken as animal attacks; this is all to attract the attention of real werewolves and fulfill his dream of becoming one. In one instance, he mauls Kayla, a friend of such a werewolf named Wilbur, but is unable to kill her when he's scared off by police. When Wilbur confronts him, Caldwell questions if he's upset about Kayla, stating he intends to finish her off at the hospital.
Faux Symbolism: As it's primarily set in a church, "In Sickness And In Health" naturally has a lot of this.
Nightmare Fuel: The last scene of "In Sickness and in Health" is perhaps the creepiest part of the episode, especially since Maggie Lawson did such a good job.
From the comics
Like You Would Really Do It: While most people were pretty sure Thor was/would be dead (the previews for future comics even showed his replacement), he's too big to stay out of the picture for long. And indeed, a few months later, Thor was back with the living again.
Replacement Scrappy: Tanarus, the guy supposed to replace Thor after this event was already hated by the time he appeared, because he looks like a '90s Anti-Hero, his appearance and Thor's death meaning there won't be interaction between Thor and Kid!Loki for awhile, he's not using Mjolnir at all, but a weird staff with a heavy head (indicating to fans that he's not worthy to be Thor anyways, since a worthy person can lift the hammer), and for not being one of the many established people who could take over for Thor, namely Beta-Ray Bill and Thunderstrike. As Kid!Loki immediately realizes something is wrong with Tanarus and that Tanarus turns out to be Thor's old enemy Ulik in disguise, this was surely intended.
Tearjerker: Tony, furious with Odin, yells that if they're gods, then he'll sacrifice the only thing he can give that's worth anything... and takes a big swig of alcohol... And after so long being clean, too. Later issues of Fractions's Invincible Iron Man imply that this was in part a Senseless Sacrifice, and that Tony, faced with the end of the world, saw an excuse to give in to his addiction.
