Press the soccer ball to deploy your character. You can only deploy one at a time.
I'm planning to make a game like this and a game I tried a long time ago (Link: https://scratch.mit.edu/projects/186618320/ ), but it won't have two towers. It's going to be a survive-as-long-as-you-can game. Music: - The Evil King Koopa from Super Mario World - "Weldar, visually impaired welding torch" from Banjo-Tooie