Sentry Buster Bloon

Sentry Buster Bloon is a Bloon that will appear very rarely at times. It moves at the speed of a Green Bloon and it has an RBE of 1250. It spawns no children and gives no money. It will target the most expensive tower. Despite having the appearance of a Lead Bloon, it can be damaged with sharp projectiles. It has an Ability:
 * Explode: Once the Bloon reaches it's target/gets hit 1250 times, it will turn red and explode. Can break Level 2 Shield.

Trivia

 * This is the only Bloon that doesn't give any money, "Not very fun or fair really is it?"
 * Reference.