Rocketeers are very useful at dealing with the enemies Jack O' Bot spawns because these enemies normally spawn in hordes.Outlaws and even Sentries, when set to Strongest, can be very effective at dealing damage to Jack O' Bot.Once Jack O' Bot goes out of range of these towers, relocate them to further weaken the boss.Towers such as the Minigunner and Turret are strongly recommended against this boss. Use towers with high DPS and decent range against this boss.It was extremely tall due to its mechanical legs. It had a skull below its torso, and a metal pad on its chest. It had a pumpkin head (similar to Sinister P), pumpkins on its shoulders and a fleshed-out torso, but everything else appeared to be mechanical. Jack O' Bot was a giant pumpkin robot armed with a laser machine gun and an arm cannon. This ability could spawn Jaxes, Mummies, Frankensteins, Ghosts, Witches, Bats, Swamp Things, Demons, Scarecrows, Strong Mummies and Clowns in front of the Jack O' Bot. Its third, and final, ability was Hallowed Laugh. With this attack, Jack O' Bot shot lasers at nearby towers, doing so in a sweeping fashion, stunning all towers hit for a period of time. Its second ability was the Jack O' Minigun. This disabled them from attacking for a long period of time. On impact, the pumpkins would explode, and all towers within the explosion radius would be set on fire (stunning them).

With this attack, Jack O' Bot shot three explosive pumpkins at three random towers. The first ability it could perform was its Jack O' Bombs attack. Despite its extremely slow speed and the huge length of the map, it was very difficult to defeat due to a combination of its abilities and the enemies it spawned. It had a high amount of health and three abilities. Jack O' Bot appeared exclusively in Nightmare Carnival as the final boss of the Halloween 2019 Event.

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