Ep 12. Repulse!

In the episode "Repulse!" of Justice League Action season 1, the Justice League faces a new villain named Repulse. The episode starts with Repulse attacking a city and causing chaos with his powers of magnetism. The Justice League members Green Arrow, Swamp Thing, and Plastic Man work together to stop him but Repulse manages to escape. They soon discover that Repulse is hunting for a powerful magnet that can make him invincible. The magnet is owned by billionaire businessman Maxwell Lord, who Repulse attacks to get his hands on the magnet.

The Justice League arrives just in time to stop Repulse from retrieving the magnet. However, Repulse proves to be a formidable foe when he uses his magnetism powers to defeat the heroes. He is able to repel all their attacks and even turns Green Arrow's arrows back at him. With no other options, the Justice League retreats.

Meanwhile, Repulse takes the magnet to an abandoned building to activate it. The magnet powers up and Repulse becomes invincible, but he also starts to lose his mind due to the effects of the magnet. He starts to see illusions and becomes more and more aggressive.

The Justice League regroups and comes up with a plan to defeat Repulse. They realize that the magnet that Repulse is using emits a specific frequency. Plastic Man suggests that they use that frequency to disrupt the magnet and weaken Repulse. Green Arrow is able to modify one of his arrows to emit the frequency, and the Justice League heads to the abandoned building to put their plan into action.

When they arrive, they find that Repulse has become even more powerful and is causing destruction all around him. The team fights against Repulse, who is able to deflect their attacks effortlessly. However, Green Arrow manages to get close to Repulse and shoots the arrow at him, disrupting the magnet's frequency and weakening Repulse.

With Repulse weakened, the Justice League is able to defeat him and destroy the magnet. With his powers gone, Repulse reverts to his human form and is taken into custody. Meanwhile, Maxwell Lord thanks the Justice League for saving his life and agrees to donate the magnet to science so that it can never be used for evil again.

In the end, the Justice League once again saves the day and restores peace to the city. The team proves that working together and using their individual strengths is the key to defeating any foe. "Repulse!" is an action-packed and thrilling episode that showcases the power and abilities of the Justice League.