From Plants vs. Zombies Wiki
The Mindblower is an item in Plants vs. Zombies: Battle for Neighborville. It is used only in Town Center on the plants' side after the player has completed the missions Boogie Beatdown, I Treasure You, Baron-Palooza, and Fight Zentrification.
According to Major Sweetie, the Mindblower is too heavy to be carried around and therefore has to be activated remotely from multiple stations scattered around the Town Center, which summons the Mindblower and allows the player to control it in a similar fashion to Garlic Drone.
It is the only way to destroy Bouncer Bots.
Overview
The Mindblower is made up of a lawnmower wearing the Yeti's bling, the Baron's hat, and a beard. When in use, it appears to produce a siren sound effect. Upon detonation, it appears to explode into confetti.
Primary weapon
The Mindblower has two primary weapons, but they do not have an official name, nor do any references to their names exist.
The first primary weapon of the Mindblower is a physical attack that deals 10 damage to zombies whose hitboxes collide with the front of the Mindblower. Any zombies attacked in this way are launched up and knocked back slightly.
The second primary weapon of the Mindblower is an explosion. The explosion is triggered via triggering the attack control and the Mindblower is instantly destroyed as well, similarly to Weed Out and Yeti, Set, GO!. This attack is the only way to destroy Bouncer Bots. If a Bouncer Bot is successfully destroyed, the player will earn 10 "Path Cleared" XP.
Strategies
The Mindblower's main purpose is to destroy Bouncer Bots across Town Center to be able to access Golden Chests and to fight Olds Cool. It should be noted that the Mindblower has a limited amount of fuel, so the player should aim to find the closest operating station to utilize it, or else waste valuable time.
Due to the functionality, small hitbox, and health, another purpose of using the Mindblower is to practice using Weed Out or Yeti, Set, GO!. Combined with this and the lack of recharge in between uses, the Mindblower is perfect for allowing the player to perfect attacking targets while under potential fire.