Lore

With nothing but spice in her dough, Peppercorn Cookie has the high-spirits and thrill-seeking personality baked in. Travelled across the sea before joining the Sneaky Sands Clan(for a while, anyway), this Cookie is quickly proficient in acquiring rare treasures in any way, resulting in her becoming a legendary mercenary among the clan. There's nothing she can't find in the desert!

It turns out that she's hunting for a traitor! The one that stabbed her back not once, but three times! Wonder who...

During downtime, Peppercorn Cookie enjoys a cup of juice under the shade. Any hot-headed thrill-seeker needs a break, after all.

Click here for the official description

A bunch of sun-dried black pepper is arranged on top of Peppercorn Cookie. With nary an ounce of sweetness in her dough, she's become an incredibly spicy and boisterous Cookie. Peppercorn Cookie, who welcomes any kind of trouble, traveled across the sea before finally becoming a member of the Sneaky Sands Clan. Her shady exploits have become legends within the clan, from robbing traveling merchants to procuring rare artifacts in abandoned ruins. The Cookie is willing to take any jobs that pay enough. Rumor has it, however, that Peppercorn Cookie is actually looking for the traces of a runaway traitor of the clan! When not undertaking a job, the Cookie loves to relax under the shade of the trees with a cup of juice in her hand. But as soon as trouble appears, Peppercorn Cookie puts on her mischievous game face and hurries to the scene! Don't stand in her way, because if you do, she just might turn you into powder!

Yogurt Dune Dash

Story that details Chili Pepper Cookie's adventure in Yogurca. The first(and so far, only) appearance of Peppercorn Cookie.

Click here for the story

Full story can be viewed here:

In game summary:

Chili Pepper Cookie travels to the Serpent Temple, aiming to steal a magic pot. Inside she meets Peppercorn Cookie who is also after the same treasure that Chili Pepper Cookie is looking for. The two eventually run into the guardian of the temple, Jelly Serpent Cookie. Chili Pepper Cookie, assuming that Peppercorn Cookie and Jelly Serpent Cookie are working together, activates a pit trap that entraps herself and Peppercorn Cookie. It's only now that Chili Pepper Cookie recognizes Peppercorn Cookie. Chili Pepper Cookie starts to reminisce about how the two met, while Peppercorn Cookie regrets ever saving Chili Pepper Cookie.
In the past, Chili Pepper Cookie is stranded in the desert, having stumbled into quicksand. Peppercorn Cookie comes to her rescue. Chili Pepper Cookie rewards this deed by pickpocketing Peppercorn Cookie. Continuing on, Chili Pepper Cookie comes across the Mirage Village and goes on a stealing spree, before being promptly captured by the Sneaky Sands Clan. Right before Peppercorn Cookie can punish Chili Pepper Cookie for stealing from her and the Mirage Village Merchants, the Sneaky Sands Boss appears. Seeing promise in Chili Pepper Cookie since she was able to steal from Peppercorn Cookie, he offers her the opportunity to join the Clan, which she accepts. Peppercorn Cookie is put in charge of training Chili Pepper Cookie.
Chili Pepper Cookie proves to be having a hard time following the rules of the Sneaky Sands Clan, continuing to steal from other Clan members. She laments not being able to go on missions, but Peppercorn Cookie Peppercorn Cookie makes it clear that she's still in training and would probably ruin any mission she was sent on with her loud mouth. Peppercorn Cookie introduces Chili Pepper Cookie to Lilac Cookie Lilac Cookie and Scorpion Cookie Scorpion Cookie, who assist in training her. Disquieted by her training, Chili Pepper Cookie attempts to flee from the Clan, but is unsuccessful. Peppercorn Cookie begrudgingly admits that Chili Pepper Cookie has some talent when she finds out the Cookie managed to steal from both Lilac Cookie and Scorpion Cookie. The two of them are called to meet with the Clan's boss.
The Sneaky Sands Boss called in Peppercorn Cookie and Chili Pepper Cookie to assign them a mission, the steal from the Yogurt Mansion. On the job, the two are caught by Guard Cookies, and they decide to split up to get away. Chili Pepper Cookie flees with the treasure while Peppercorn Cookie distracts the guards. The two agree to meet up on the White Sand Dunes. Peppercorn Cookie spends hours waiting for Chili Pepper Cookie to appear at the rendezvous, only to realize that she has been betrayed. Back in the present, still stuck in the trap in the Serpent Temple, Peppercorn Cookie reveals that because of that incident, she was banished from the Sneaky Sands Clan and has been plotting revenge on Chili Pepper Cookie ever since. Chili Pepper Cookie convinces Peppercorn Cookie to put aside their differences and work together in order to escape from Jelly Serpent Cookie, and the two manage to escape the temple with the treasured gold pot in tow. Afterwards, Peppercorn Cookie is surprised when Chili Pepper Cookie seemingly lets Peppercorn Cookie have the treasure and they seem to reconcile. It's only later when meeting with her client that Peppercorn Cookie realizes that she's been betrayed by Chili Pepper Cookie once again.

Personal opinion on the story (TL; DR: 4/10)

To start with, this is a terrible way to introduce a new character. Using a pre-established character(Chili Pepper Cookie) to prop up a new one sounds good on paper, but the story shows why these two aren't supposed to be a team. Chili Pepper Cookie repeatedly swindle and dupe Peppercorn Cookie several times throughout the story, resulting in Peppercorn taking a hit on her reputation and status(banished from the clan seems a pretty big deal). Chili Pepper Cookie and Peppercorn Cookie is an imbalanced dynamic favoring the former, making the story unbearable to read. It does not help that Chili Pepper Cookie is a flat character in itself, being a skilled thief that steals for the thrills, and yet this story does not give her any development beyond "here's Chili Pepper being a cool thief and duped even skilled assasins like Lilac!".
The first half of the story hooks the reader to Peppercorn Cookie's origin story, though centered around Chili Pepper Cookie. However, the second half of the story makes it clear that the writers had no clue what to do with the character. While it is already established that Peppercorn Cookie is loyal but gullible, she hasn't learn a thing throughout the story. Not even a single doubt pops up when Chili Pepper Cookie lets her go with the golden pot. This characteristic sets her as a foil to Centipede Cookie, her update partner. While Centipede is extremely paranoid for traitors, Peppercorn will help out even when betrayal would surely happen.
There is something that needs to be salvaged. Peppercorn Cookie, despite being a boisterous, trouble-seeking rogue, has the softest heart among the criminal roster, as Scorpion Cookie had noted. She also has this "big sister" energy going on, like her relationship chart and interactions with characters in this story implicates. That side of her needs to be explored AND narratively supported, as her kindness and her utmost loyalty in this story is abused by the narrative via Chili Pepper Cookie.
Overall, the story does an okay job at implicating depth of characters in Yogurca, but the second half of the story and the ending is repetitive and leave a bitter taste. Peppercorn Cookie is a wonderfully tragic character, both in-universe and real life, that needs a story centered on her without being a fodder for Chili Pepper Cookie. Yogurca is bountiful of environmental storytelling potential, if the writers are willing to expand beyond the criminal underbelly of the region.

Let's not forget about her Pet, too!