Mango Cookie (Korean: 망고맛 쿠키, mang-go-mat kuki) is an Epic Cookie released along with Sea Fairy Cookie in the first half of the Tropical Soda Islands update (v1.6). He is of the Magic type and his position is prioritized to the Middle. He makes a brief appearance in the Tropical Soda Islands Story as Princess Cookie and Knight Cookie's guide to the Islands. He makes another brief appearance in the special episode, Summer Soda Rock Festa, where he rescues and escorts the player to the festival and later performs in it as Mangosting.

The sun glistens above the serene palm trees of the Tropical Soda Archipelago. Once you arrive, Mango Cookie will give you a cheerful, hearty welcome making you feel right at home! With ripe mangoes mixed straight into the dough, Mango Cookie is pure-spirited and tenderhearted. Whether it's spending time along the emerald coasts or exploring the islands with his canoe, Mango Cookie makes sure to enjoy life to the fullest. When the sun reaches its peak, sometimes he'll hang up his hammock underneath the shade of the palm trees and take a relaxing nap. When Cookies visit the archipelago, Mango Cookie can't help becoming a hyper chatterbox. Mangoes will ripen by the time he runs out of stories to tell!

This stone holds a piece of Mango Cookie's soul. Its faint glow resembles the colors of the setting sun from Mango Cookie's coastal trips.