My personal take: I think it's safe to say that both The Beasts AND The Ancients can be easily yanderes, with the only difference that, well, The Beasts already are a bit fucked up (I mean, Eternal Sugar is a canon yandere, most second more likely to be would be Shadow Milk), so they're more obvious about it while the second is more subtle or slow
Why? Most typical reasons are that they're immortal, meaning they've lived long enough to see everyone they love die (note: Golden Cheese), all of them have been through some nasty trauma and they come to the painful realization of just how fragile cookies can be, affecting their view in a potential relationship— which ends up developing as obsession, fear and overprotection. After all, the life of an immortal can get pretty lonely
anyways have your hubby
also also my take on each beast and ancient as a yandere bc why not. Long ass ramble/headcanons under the cut
THE BEASTS:
❦Shadow Milk: Manipulative (obvs), stalker, clingy and obsessive. Once I read a post about him and since then I can't take it off my head, it basically said: I don't think he's that prone to kidnapping you, he wants you to love him as much as he loves you, after all. You have to peak his interest and then his obsession will grow very gradually, just like he obsessed and taunted Pure Vanilla, but once he decides to show up to you when he sees the time's right— you can tell his sheer adoration towards you. Pretty jealous tho, and I see him kinda getting insecure if you seem to favor Pure Vanilla or his past self
❦Eternal Sugar: Manipulative, isolating, delusional, obsessive and dependent. She genuinely wants your happiness, but as we all know, her methods aren't the best. Basically imprisons you into her garden. If not that, I can see her basically following you around like a lost puppy and trying to make you happy at all costs. Her emotional and mental state are very dependent of you and how you feel, so she feels like her jam melts each time you get mad at her. Then again, she's pretty delusional so she might not take the hin— clear signs. On a good side, she's probably the least jealous beast.
❦Mystic Flour: Possessive, overprotective. That's about it, sorry, I don't know much about how to characterize her 😔. Most likely scenario is that you caught her attention, maybe even touched her apathetic heart. Just a little. But that was enough for her obsession to gradually grow. She genuinely wants you to see her point of view and follow apathy, just that unlike the other cookies, she's pretty patient and won't force you, at least not so directly. Despite her wish for everything to return to flour, she finds herself wanting you by her side, watching the white dust falling from everything you once held dear.
❦Burning Spice: Overprotective, jealous, delusional, attacking. Least to say, he's the most likely to kill, without any regret or hesitation. (I mean, all beasts kill but, y'know). I didn't know well how to characterize him as well until I read a post, basically: After seeing so many civilizations and creations being destroyed over and over again because of the change (or lack thereof), he finds himself wanting to preserve one thing: you. He's extremely overprotective, destroying anything that comes near you, innocent or not. In his mind he thinks he's protecting you and you find his strength and loyalty as love, even though is far from it.
❦Silent Salt: Overprotective, self deprecating, loyal, worshipful. Probably the most overprotective and second most prone to kill next to BS. After all his corruption and mistakes, he finds himself to be too dirty, afraid to taint your light that oh so enlightens his lonely, dark path he built around himself. Never really tries to meet you, though, he always watches from the shadows and silently kills any enemies in the way before you even walk down through it or notice. He sees you as the last hope of cookie kind he must protect.
THE ANCIENTS:
❥Pure Vanilla: Overprotective, dependent, worshipful and obsessive. I mean, he's a healer, and Shadow Milk himself called him 'submissive soul' lmao. Most likely the most "harmless" yandere, but doesn't make him any less overwhelming. Take Viridescent Daydream as reference. Extremely cheeky but also worshipful. Just like White Lily and Silent Salt, sees you as a pure deity. Maybe a bit delusional into thinking you're the only soul that truly understands the pains he never lets anyone see under his calm facade. Also, despite being the most patient being in Crespia, if pushed to his limit, I could see him giving you the wrong pills so you stay sick, or if you already have a long-term illness, making you even more dependent on him, although you can see the guilt trembling in his smile.
❥Hollyberry: Overprotective, clingy, delusional. Ironically, pretty similar to her other half. While she keeps her cheerful and nonchalant usual self, she's also incredibly clingy, always taking you with her anywhere she goes to the point Wildberry and Pitaya are completely acquantied with you. Delusional because she can't ever seem to take a 'no' seriously from you, thinking you're just being moody or pouty. The only time her facade seems to break is when your dough suffers the slightest crumb, specially if it was because of her.
❥Dark Cacao: I know I'm saying overprotective for almost everyone but he's the epitome of such. Also, self-deprecating, isolating and devoted. Why? His paranoia over your safety being put at risk and with how many enemies are breathing down his neck...well, might also coward out and just lock you up in his kingdom, in a room supervised by his most competent guards 24/7. He doesn't feel any power off of this tho, just feeling regretful and knowing you probably hate him. And he doesn't blame you, doesn't have any right to. Despite all, his loyalty will always lie with you, and every action his dough does is thinking of you, even if you hate the mere thought of him.
❥Golden Cheese: Monopolizing, isolating, doting. Seemingly the most chill-going at the beginning, until she decides to lock you up in her virtual paradise. She spoils you rotten with goods and gold, treating you smugly as her 'most treasured prize', giving you anything you could ever ask for— as long as you don't leave her. It goes to a sad point where she no longer cares if you actually love her or not, or if you just want her possessions, just please don't leave her...she can't lose anyone else.
❥White Lily: Worshipful, stalkerish, self-deprecating, obsessive. Well, kinda obvious. Again, like PV and SS, she sees you as perfection made dough— the perfect specimen, if you will. Very shy to approach you, her obsession grows very gradually but surely. Prefers watching you from the background, believing you wouldn't ever want a nuisance like her in your presence. Studies you like crazy and her obsession can get pretty sick. I don't believe she's willing to kill, but she WOULD betray her very ideals and beliefs for you. Worst case scenario: yandere Dark Enchantress Cookie
(sorry if it's bad, I'm really not a writer and my vocabulary is pretty poor, but I hope I made my point across— augh </3)
