The Glass Bloon looks like a light gray Bloon. If it is in a Bloon rush, you see the other Bloons in the rush through it. Otherwise, you see the track. It only takes 1 hit to pop (glass is fragile, lol) and has a 15% chance to drop a Glass Shard, but it is immune to light attacks. It's unaffected by everything that the Shining Bloon takes half damage from. These attacks, unlike the Shining Bloon, pass through it as if it did not exist. The Glass Bloon's parents are the Window Bloon and Stained Glass Bloon. It contains 2 Lead Bloons, and it first appears on round 35. The message that appears before Round 35 is "Leads are coming with Glass Bloons. Glass Bloons are immune to light but ignore it completely, meaning it goes straight through." The Glass Bloon has an R.B.E. of 55.