“ Gosh, do you even lift? „
"Muscle Cookie's recipe requires large quantities of protein powder and about three weeks of intensive kneading. Only after that, the taste of raw muscle power comes to life. Such a rigorous cooking process has made Muscle Cookie a bit short-tempered. He tends to throw exercise equipment when angry. But don't be afraid: once he's done dealing with Cake Monsters, he's as cool as a cucumber."
|"The stone holds a piece of Muscle Cookie's soul. You can use this heavy stone in your weight training."|
|Muscle Cookie's Soulstones can be acquired in World Exploration Dark Mode Stages 4-3 and 7-4.|
Muscle Cookie is a very large Cookie with defined abdomen and pectoral muscles upon his considerably bulky upper body. He has a gooey black mask covering his face and black pants. He also carries a cane dipped in the same material as that which makes up his mask.
- Muscle Cookie's internal name is "cookie0015".
- Muscle Cookie's original Rare status from OvenBreak was revised upon his addition to Kingdom, being changed to Common.
- Muscle Cookie's English voice actor, OJ Gaming, is a prominent Cookie Run: Kingdom YouTuber who regularly posts Kingdom content on his side channel, More Juice.
- Muscle Cookie's Japanese voice actor, Inada Tetsu, is best known for voicing Endeavor/Enji Todoroki from My Hero Academia, Ira Gamagōri from Kill la Kill, and Sajin Komamura from Bleach.
- Muscle Cookie's Korean voice actor, Si Yeong-jun, is best known for voicing Kaidou from One Piece, Alex Louis Armstrong from Fullmetal Alchemist, and Giroro from Sgt. Frog.
- Muscle Cookie's Taiwanese voice actor, Lin Guzhen, is best known for voicing Mohammed Avdol from JoJo's Bizzare Adventure: Stardust Crusaders, Renji Abarai from Bleach, Daichi Sawamura from Haikyū!!, and Joe Gardner from Soul.
- Muscle Cookie's German and French voice actors, Daniel Welbat and Martin Amic, also both provide the voice of Fire Spirit Cookie.