Agent Gym

The agent gym is a new building found in the menu of BTD6 and is an available building in Bloons Monkey City 2. It has different uses depending on the game.

BTD6
As mentioned above, it appears in the main menu. It is right next to the special building lot and is shown boarded up and run down. You can unlock and access the gym by paying $2500 monkey money once you have 3 impoppable medals. You can select a special agent when inside to train the agent. Training the agent will get you 2-7 steps to Pro or Epic. It costs $500 monkey money to train an agent. Non-living towers can be trained but only get 1-4 steps and cost $750 to train.

BMC2
In this game it costs $7500 city cash and 1500 Bloontonium. It lets you buy special agents. The cost for special agents is their BTD6 cost in monkey monkey multiplied by 1.5 times changed into city cash. You do not get pros and epics through placing them though. You must train agents for $1000 city cash to get 1-5 steps to pro/epic. You can only have 1 at a time and it takes 150 energy. It takes 1 hour to build it and 3 hours to train an agent, however you can buy agents without needing to wait. The gym can be upgraded with a cost equal to the current level times $1500 city cash. The upgrades increase special agent capacity by 2, which is, by default, 3. It can be upgraded 8 times.