Mash is a thickset woman with large shoulders and a barrel chest. She has a very large round nose and has a great amount of brown hair that falls down her back and over her shoulders. She wears a cream-colored dress with orange rings on it.
As an officer of the Big Mom Pirates, Mash has authority over lower-ranking members of her crew. Her combat powers and abilities are unknown, but she is presumably strong as she is an officer of an Emperor-led crew.
Mash possesses a strong will, being able to withstand a burst of Big Mom's Haoshoku Haki and remain conscious from her loud scream.
Bege's crew attempted to assassinate Big Mom, but their attempt failed. When they attempted to escape, Mash was seen shooting at them with her crew. However, their shots were blocked by the Vinsmokes. Mash later watched as Charlotte Katakuri confronted the escaping Bege and Caesar Clown. However, when the Big Mom Pirates were on the cusp of victory, Big Mom's Tamatebako exploded after falling off the Whole Cake Chateau, causing the Chateau and everyone on it to fall to the ground far below. However, the Big Mom Pirates' falls were broken when Streusen turned part of the Chateau into cake.
Mash is a colloquial term for mashed potatoes. It can also refer to mash bill, which are ingredients used to produce a wort for the production of alcoholic beverages. Both fit the food-themed names of the Charlotte Family and Big Mom Pirates.