Engineer Monkey

Monkey Engineer is a tower in Bloons Tower Defense 5 Deluxe and Bloons Tower Defense 5 iOS. It wields a nail gun that shoots at a quick speed, popping three bloons per shot. This tower, in high numbers and with monkey villiages, is easily the best and most cost effective tower in the game by far.

Trivia

 * The was added in the most recent Bloons Tower Defense 5 iOS update, along with a new track.
 * This tower can be upgraded to use Sentry Turrets (That randomly spawn within his range) and use a Soap Dispenser to spawn foam that removes camo and pops lead. The Sentry Turrets and Dispensers are most likely references to Team Fortress 2.
 * The tower itself may also be a reference to the Engineer class in Team Fortress 2.
 * A Monkey Engineer with Cleansing Foam doesn't aim with his gun, so the foam can come from behind the monkey.
 * There is a glitch with Sentry Turrets that allows them to be placed on the road or in places that towers can't normally be placed in, if there is no more space to deploy sentries.
 * Sentries can also go on water.
 * This tower with the Cleansing Foam upgrade is the only tower that makes Regrowth Bloons lose their regen status.
 * If you have a 1,0 monkey engineer and a support chinook then the chinook can move the sentries.
 * The tank for the Cleansing Foam is the same as the tank a Glue gunner has with the Glue Striker upgrade.
 * Spamming 2,2 or 2,3 Engineers while their third tier Specialty Building is activated can beat every single track on Easy, including the Extreme Tracks, if some are influened by a 2,2 Monkey Village.
 * The Monkey Engineers Bloon Trap ability is available in deflation mode making it the only way to gain more money in deflation