I was looking at some of things Flowey says when you beat Asgore repeatedly on the same save file, and I found some interesting stuff that corroborates your Chara analysis and might help with your future Asriel/Flowey analysis, since it sheds some light on how Flowey views himself and others.
When you beat Asgore the 2nd time, Flowey says this:
And when you beat Asgore for the fifth time, he’ll say this:
I think this pretty much confirms that the reason Flowey “recognized” Chara isn’t because he saw Frisk’s actions in the genocide run and thought “this person’s a violent, abusive jerk? That sounds like the Chara I know and love!”
The dialogue above will appear even during an (incomplete) pacifist run, yet Flowey will still remark how Frisk is “just like me,” despite Frisk going out of their way to not harm a single soul. I think it’s evident that Flowey isn’t projecting his sadism and violent tendencies onto Frisk here, or at least not primarily.
In Flowey’s own summation, a person who’s “just like” him is someone who’s bored and detached from those around them, either as a result of soullessness or save abuse (or a combination of both). In other words killing is just a potential symptom of those two things, but it is not the cause. This is backed up by Flowey’s story in New Home, where he points out that he initially tried to use his powers for good in spite of his own soullessness. Speaking of which…
It’s important to remember that this line comes after Flowey mentions that killing has “grown tiring” for him, and immediately after that he says “You understand, Chara. I’ve done everything this world has to offer,” implying that he thinks Chara feels the same way and has gone through a similar experience with their soullessness and save-scumming. Think of the implications of that–Chara, who hated humanity and who gave up their life to kill six humans, eventually grew bored of killing, at least in Flowey’s estimation. Apparently violence and nastiness weren’t high on their priorities list, according to Flowey.
The main takeaway from the “creatures like us” line isn’t how violent or abusive Flowey and Chara are (or were), but rather how unique the two of them are from everybody else because of how detached they’ve become. Flowey’s obviously not saying “we should totes kill each other right now because we sure do love violence, don’t we?”
The reason Flowey “recognizes” Chara so early in the genocide run wasn’t because of the slaughter itself, but rather how methodical and illogical it was. From Flowey’s perspective, the boredom resulting from soullessness was the only explanation for it, and there’s only one other person he knew who could be in that same situation. Again, he recognized this behavior as the symptom of Chara’s current condition, not the cause (i.e. Chara wasn’t like that from the beginning).
You’ve pointed out that Chara clearly had a soul at one point (otherwise the Asriel fusion would’ve been impossible), and Chara more than likely didn’t abuse the save function when they were alive (given the weight they place on “consequences” and their refusal to undo their own mistakes). I think it’s also evident that Chara didn’t go around slaughtering monsters in life, nor did they use them and throw them away like broken toys without caring (otherwise I doubt monsters and their history books would’ve remembered Chara so fondly). Conversely, Flowey did do all of these things, but only after he became soulless–if such a stark reversal happened to Asriel, then it’d be no stretch for him to assume that the same thing happened to Chara after they lost their soul.
Flowey does not identify with Chara because of any sort of hatred, abusiveness, or violence on their part, nor does he ever imply that they were ever like that in life. Flowey can identify with Frisk on a pacifist run despite Frisk never displaying those qualities, even before he mistakes Frisk for Chara. What Flowey, a soulless Chara, and a save-abusing Frisk all have in common is boredom and an increasing detachment from the world around them, not a mean streak or a tendency towards violence.
If a relentless, knife-wielding killer was the only thing Flowey was looking for then I can think of at least one other person he could’ve latched onto
But Flowey’s attitude toward people with souls is pretty apparent
There’s something inexplicable that I happens in Undertale that as of yet has no explanation. Who exactly IS healing Frisk? In the beginning of the game, we are pinned down by Flowey. Attacked. And then, we are suddenly healed to full. And Flowey?
Is utterly speechless. His mouth is wide open and he’s staring, as if to say ‘what did you DO?!’
Now, it’s easy to assume that this is Toriel’s doing. After all, we see that she is capable of healing us later on, and blows Flowey away immediately after. But look at where he’s staring … At US. He sees Toriel later, and he looks to the right. So, if Toriel is to the right, and he’s looking at US when we suddenly jump to full health … (Forgive me for not getting that moment in screenshot; his sprite only changes for a fraction of a second and I can’t quite capture it. But, pay attention on your own runs and you will see it.)
Not only that there’s a sound effect that plays when we are healed/Flowey’s missiles disappear that doesn’t play when Toriel heals us … But DOES play again. It plays a LOT. It plays every time we interact with a SAVE point.
And here also we are healed completely.
It plays one more time. During Frisk’s hour of dire need, when they scream out into into the darkness and call for help …
And this time as well, the same sound effect plays, we get healed and Flowey has NO IDEA what just happened. He’s just as confused now as he was then.
So. Let me ask you a question. What healed Frisk? Who could have answered?
Who was with us at every SAVE point? At the beginning of the game, when we fight Flowey, who was there? Who was the last person who had yet to give Frisk their aid in the battle against Omega Flowey?
Who heals Frisk?
I think all these questions have the same answer: Chara.
I think he can totally feel emotions, just that without a soul he lacks natural connection to those emotions, especially compassion/empathy.
I’d imagine it being like your body suddenly forgot how to breathe on instinct and suddenly every breath you had to take was a conscious action. But by the end of the game I think Flowey learns how to feel compassion again even without a soul to ground him.
the experience changed him to be invested in others happiness.
It just takes a lot of time and experiences to relearn how to “feel” again.