Well, since the fan art of her got posted prior to her reveal, here's Drillbread Cookie!
Hair sharp as drills it could stab, Drillbread Cookie is an alternate dimension version of Croissant Cookie who has a strong hatred for the Time Balance Department. She used to be a member, but quit due to the overwhelming stress working there caused.
Now she wreaks spacetime havoc alongside Twizzly Gummy Cookie and her gang, even being considered as the "second boss" of their party.
She's gruff, arrogant and bossy. Croissant Cookie's complete opposite, you may as well call Drillbread Cookie her doppelganger.