1. Asgore willingly killed the six children because he wanted to.
This is blatantly OOC and completely ignores the canon story of Asgore and his motivations. Asgore himself states he doesn’t want to hurt anyone - and that he only declared war and kept going because it gave his subjects hope.
We can see just how true this is, as with the monsters throughout New Home tell you how much Asgore gives them hope. Asgore, as a king, feels duty-bound and trapped in his responsibilities, and is a survivor of a war that almost wiped out his entire kingdom before being sent underneath the underground to die. These are the actions of a traumatized individual who was backed into a corner, not a malicious person.
2. Asgore stalks his wife and is unable to let go of her.
While Asgore certainly exhibits a lot of social awkwardness, this is no indication of “creepy stalker” behavior. He states he just wants to see his wife, not that he wants to get back with her and wants to make her get back with him. He even only asks her if they could be friends again - and while upset at her rejection, he doesn’t protest about it.
It’s completely normal to miss people you no longer have in your life, and social awkwardness absolutely isn’t malice.
As for Deltarune Asgore - it’s unclear whether or not he is actually stalking her, other than sending her flowers that she doesn’t want and throws away. We don’t know if he means anything malicious by this other than it just being a gesture to show he cares- because he sends just about every other character flowers as well, and even sends Rudy huge bouquets of red roses.
3. Asgore groomed Undyne into the royal guard.
I don’t even think I have to go over just how stupid this one is lmao.
Undyne willingly calls Asgore her friend, even after befriending Frisk, and is devastated by his death, even vowing to kill them should certain conditions be set. If Asgore had truly groomed her - she would have realised this long ago, as Undyne has her own damn agency.
It is extremely insensitive and harmful to casually use this language as it hurts real, living survivors of grooming and waters the word down completely - when there are far more prominent examples of characters who exhibit this behavior, rather than harmfully labelling a character you dislike, just to make them look bad in the fandom.
It is completely okay to dislike a character. But do not throw language like this around just because you hate the character. “Groomer” and “Predator” are not just some negative connotations for you to use.
4. Asgore is a coward.
Asgore has a lot of reasons as to why he chooses to do certain things. It is highly implied he knows about how human souls work as well as determination. We can confirm this with how he nods when he’s told he has killed you before.
Whether he knows this because of Dr. Gaster, Dr. Alphys or of the war with humans in his past, we don’t know.
However, it’s clear he does not want to underestimate humanity whatsoever, which is why he came up with his plan the way he did, and how he successfully was able to stall using the human souls for so long.
With Omega Flowey, you defeat him by aiding the six houls to revolt against him. The human souls clearly have minds of their own, and are later said to have disappeared after you receive a call with Sans.
While it’s said that human souls persist longer than boss monster souls, we don’t know for how long. Whether it was a plot hole or intentional - clearly human souls have more to them than meets the eye.
We have to remember that humanity almost wiped out his entire race single-handedly, and that it could “hardly be called a war”.
Asgore knows about humans more than he lets on … because he’s dealt with them personally on the surface when his people were literally slaughtered like nothing.
Some more misconceptions that I forgot to list:
5. Asgore was a bad father to Chara.
While Asgore’s feelings about Chara are made vague in the game, we can see glimpses that he really did care for them. The most clear example that he did care for them was his speech, before he commits suicide:
This is by far perhaps the most strongest evidence that Chara clearly wasn’t an evil incarnate child. If Chara truly was an evil child - then it makes no sense for Frisk, an evidently kind-hearted child, to be compared to them here.
As for their cremation, this is not a clear example of his lack of care for them. There are various methods of ceremonies with dead bodies in funerals, and it varies from person to person.
6. Asgore was a bad father/husband in general.
Sure, Asgore definitely isn’t perfect. But what happened to him - up until he declared war - was not his fault. It was a horrific tragedy that was out of both their hands, and one that was orchestrated behind their backs. Asriel was essentially assisting Chara in their own suicide - they planned this together, and Chara, while not inherently evil or a malicious child at all - clearly planned ahead and put pressure on Asriel to go through with the plan.
As for Asgore pressuring Chara himself - this was not intentional by any means, and it was his way of wanting to share his hope with them. He does the same thing with Frisk, when they are facing off Flowey. Monsters’ hope is an important aspect of their wellbeing.