Miss Monday is the assigned female partner to Igaram (AKA Mr. 8) at the time during his infiltration within the Baroque Works. Not much is known about her other than that she is inhumanly strong as indicated by her mass muscles and huge size. Miss Monday, along with Mr. 8, Mr. 9, Miss Wednesday (AKA Princess Vivi) and every resident on Whiskey Peak fight against Zoro. After Vivi is exposed by Mr. 5 and Miss Valentines Day, Miss Monday attempts to hold them off, claiming that Vivi is her friend. She is defeated by Mr. 5.

(Source: Wikipedia)