Spike-o-pult (BTD3)

The Btd3 Spike-o-pult hurls a spiked ball at bloons, but unfortunately with slow fire rate, popping 12 bloons each. It is used in btd3 to wipe out clustered, large-numbered groups of low ranked bloons. It first appears in btd3 but was canceled in btd4 and replaced as an upgrade for the Dart Monkey that also is there in btd5.

Upgrades
1-1 Faster Reload: Increases fire rate.

1-2 Juggernaut: Much larger piercing.

2-1 Wider Radius: Longer range.

2-2 Multi-shot: Shoots 3 balls per shot.

Trivia
Will people be kind enough to add more trivia? Thanks!


 * The Multi-shot was taken as the Tier Four upgrade in btd4 and replaced with the name Triple Shot.
 * Juggernaut was the Tier Four in btd5, with its addition of doing extra damage to Ceramic Bloons, popping any bloon type, and having a much bigger ball.