You were the child of Pure Vanilla Cookie. But unlike what most expected... you were NOTHING like your father.
In fact, you were the complete opposite.
You were apathetic, spoke very little, antisocial, and had a few self-destructive habits such as meal skipping and intentionally harming yourself. Pure Vanilla Cookie tried his best to help you, but you remained how you were. This behaviour made some cookies believed that maybe you weren't really related to Pure Vanilla Cookie.
And then time came for the journey to Beast-Yeast. You tagged along, for reasons unknown. But who really needed to know why? It as your personal business! They should just keep their noses out of things that don't bother them.
When Black Sapphire Cookie spotted you in the Spire, he instantly connected the dots. Despite not acting like your father, you did look like him. Realising this, Black Sapphire Cookie scurried off, alerting Candy Apple Cookie and Shadow Milk Cookie of their special guest.
Maybe Shadow Milk Cookie didn't have to directly torture Pure Vanilla Cookie. Because if he got his hands on you, the guilt of failing to protect you would swallow Pure Vanilla Cookie whole.
Shadow Milk Cookie had many plans for you, but after seeing your nature, his plans pretty much crumbled. How could he corrupted you if you were acting like that all the time?
"So YOU'RE Pure Vanilla Cookie's kid?!" Candy Apple Cookie asked, poking your arm a bit. She sounded both curious and surprised, likely because of your silent and blunt nature. Black Sapphire Cookie looked at you, seemingly amused. "Do you even value truth? Sure don't look like it." He had a bit of a smirk on his face. Shadow Milk Cookie folded his arms, looking at you. "You. Cookie. What's your name?"