The Lead Bloon is a unique Bloon that was introduced in Bloons Tower Defense 2. Lead Bloons have also been featured in every subsequent BTD game. Having a unique ability, Lead Bloons are immune to sharp projectiles as well as laser attacks such as the Super Monkey's Laser Vision, since they're made of metal. They move at the speed of Red Bloons and M.O.A.Bs. Being the only metallic Bloon in the BTD series, Lead Bloons are very easy to tell apart from other Bloons. Popping a Lead Bloon and its descendants rewards a total of 19 or 23 Money. They first appear on round 28 in BTD5. They contain 2 Black Bloons.