This is a Special Agent that observes the battle and takes notes for research instead of attacking. As it takes notes, it creates hypotheses on how to make a tower you select more efficient (For instance, if you select a Dart Monkey, it develops methods of making it pop extra bloons per shot or pop lead bloons.). Each time it creates a hypothesis, it shows it to the tower you selected and then they perform an experiment, which has a chance of buffing the tower according to the research done for two rounds. It starts at a 15% chance, but it steadily grows the longer the scientist is on the screen. It takes 5 rounds to develop a hypothesis. It costs 100 Monkey Money to use this special agent.