Mint Choco Cookie is an S-grade cookie. He produces coin flowers while playing his violin (although Coin Flowers will still be produced when he appears not to). Like Cherry Cookie, he runs faster over time, but his speed will go back to normal if he collides with an obstacle.
Creates Coins when playing the violin. For a set period of time, if he doesn't collide with any Obstacles, he runs faster and creates many Coins. If he collides with an Obstacle, his speed will return to normal and his energy will be drained significantly. (With upgrades, the quantity of Coins he creates increases.) (You can enjoy the special Mint Choco Cookie BGM when you run with him.)
His exquisite performance, his dashing looks and the incredible ability of his Mint Candy violin of giving off a sweet intoxicating candy aroma while he plays make him a favorite of all lady cookies. Though often called a 'genius', he refuses to let all this attention get to his head and will never forget his long years as a humble street performer.
He produces two different types of coin flowers, one made of 6 Silver Coins and 1 Gold Coin, and another made of 8 Silver Coins and 1 Giant Gold Coin, each worth 16 and 108 coins respectively. He produces coin flowers in a specific pattern. After 9 small coin flowers are produced, he will produce 1 large coin flower, such that every tenth coin flower is large. Sometimes the coin flower will destroy obstacles, but when it does not, the coins will be lying beside or through an obstacle and become more difficult to collect.
Treasures with a strong magnetic aura are recommended to make sure that he can collect as many coins as possible. Treasures that increase coin percentage might also be useful. However, those such as Someone's Banana Peel and Cheesecake Cookie's Piece of Cake increase coin percentage but also increase speed and might cause more damage which can lead to less coins.
His coin farming ability is comparable, if not even better than Cheesecake Cookie, at the cost of not having Cheesecake Cookie's temporary invincibility when generating coins, and an increased Energy drain from hitting obstacles (while other cookies lose 40, this cookie loses 50). Hitting a single obstacle can heavily decrease the amount of coins this cookie obtains during a run, by decreasing the run length and resetting the faster production of coin flowers.
When you use a Fast Start Boost or a Fast Start Random Boost, Mint Choco Cookie will immediately enter his best phase in Coin making, so it is to your best interest to use a Fast Start Boost to help him along.
When Mint Choco Cookie energy drains to zero, he bows. This is a very common posture for when a musician finishes his or her performance which is very fitting.
Mint Choco Cookie is the second Cookie to come with two pets which he has a best combi with. The first was Alchemist Cookie.