Birthday Cake Cookie is an Epic Cookie released alongside her Pet, Party Balloon, in the first half of the Happy Cookie Festival update, as part of Cookie Run: OvenBreak's third anniversary celebrations.

Birthday Cake Cookie is a Cookie all about planning parties, always wearing a smile on her face to bring happiness to those around her with the greatest of parties. However, Birthday Cake Cookie is optimistic to a fault—when even the smallest of mistakes enters her territory, the party can easily turn from sweet to sour.

== Appearance ==

Birthday Cake Cookie has a classic golden-baked cookie complexion with soft sky-blue eyes and delicate white eyelashes at the corners. Her hair is styled like thick, fluffy buttercream frosting in a pale yellow shade, shaped into cloud-like waves and generously decorated with colorful sprinkles in orange, green, and yellow. Nestled within her frosting hair are three pink candle-like frosting layers, each topped with a glowing yellow flame—one larger candle in the center and two smaller ones on either side.

She wears a festive high-low party dress designed to resemble a decorated cake, blending the look of a striped cake wrapper with layered frosting. The bodice features vertical stripes in light pink and a deeper pink tone, while the neckline is accented with a large, puffy white frosting dollop at the center like a decorative collar piece. Her skirt is voluminous and shaped like soft, wavy frosting, edged with subtle curves and sprinkled with colorful accents in orange, green, and yellow.

She also wears simple white gloves, adding to her refined, party-host aesthetic. For accessories, she carries a long pink-and-light-pink striped cane resembling a festive party straw or decorative candle, further emphasizing her celebratory theme.

== Personality ==

Birthday Cake Cookie is an endlessly cheerful party planner who is dedicated to bringing happiness to others through perfectly organized celebrations. She is gentle and sweet-natured, much like the cream and frosting she resembles, and she takes pride in her careful attention to detail.

From balloons and ribbons to dessert arrangements, tea sets, and neatly stacked gifts, she believes every element of a party must be thoughtfully planned to create the ideal experience. However, her optimism is fragile in practice—when things begin to go wrong, even in small ways, her composure can falter, and the candles on her head start to melt and shrink.

Despite this, she consistently tries to maintain her smile, believing it is her responsibility to ensure every Cookie enjoys a perfect and joyful celebration.

== Trivia ==

• Birthday Cake Cookie notably features three candles on her head, symbolizing Cookie Run: OvenBreak's third anniversary.
• Birthday Cake Cookie's obsession with making parties perfect is a tad ironic, as before her release, Cookie Run: OvenBreak was put into emergency maintenance for eleven hours.
• The Alphabet Jellies, while playing as Birthday Cake Cookie, change to spelling out “HAPPY BDAY”. This Cookie is the second Cookie to be released with this change to the Alphabet Jellies, the first being Cotton Candy Cookie.
• Rather than flipping when double jumping like most Cookies, Birthday Cake Cookie spins when doing a double jump.
• Birthday Cake Cookie's skill theme is "Happy Birthday to You", further emphasizing her identity as a Cookie centered entirely around celebrations and party planning.

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