Extinct Matteo is a secret pet in Steal a Brainrot. Available to all players in the current game version. Highly sought after in trading communities and among long-time players. Extinct Matteo accompanies the player and grants passive buffs while active. Original price: 140M. Community trade value: around 2.16. Notably: is one of 3 brainrots that can spawn during Extinct Event, along with Extinct Tralalero and Extinct Ballerina. Out of all three, is the rarest one