'The Falcon and the Winter Soldier' mid-credits scene teases a major clash on the upcoming finale

• Warning: There are major spoilers ahead for episode five of "The Falcon and the Winter Soldier."
• The penultimate episode included the Marvel show's first mid-credits scene, featuring John Walker.
• John was seen constructing his own shield that mimics Cap's, after being stripped of the title.

The penultimate episode of season one of "The Falcon and the Winter Soldier" included the Marvel show's first mid-credits scene.

Episode five, titled "Truth," was stuffed with several satisfactory moments: Sam Wilson finally accepting the shield, a major cameo from 11-time Emmy winner Julia Louis-Dreyfus, a hint at Sam's right-hand man Joaquin Torres likely becoming the new Falcon, and John Walker being stripped of his Captain America title after murdering a Flag Smasher with his shield in broad daylight in Latvia.

The episode also confirmed that John took the super-soldier serum (which he secretly nabbed) after Lemar Hoskins was killed by Flag Smasher leader Karli Morgenthau during episode four.

Because the serum amplifies what's inside a person - "good becomes great, bad becomes worse," Dr. Abraham Erskine told Steve Rogers in "Captain America: The First Avenger" - John has become even more aggressive and intent on avenging the death of his best friend.

Based on his actions in Europe, John is ousted as Cap and ordered to no longer act in any capacity as a representative of the US government or military. He's also given an other-than-honorable discharge and told that he'll hold no rank in retirement and receive no benefits.

It's a tough blow for John, who fought for his country, was the first person in American history to receive three Medals of Honor, and was poised to be the next great Cap (on paper, at least).

Despite being removed from power, John vowed to not let Lemar's murderer get away. And due to a conversation with a mysterious person named Contessa Valentina Allegra de Fontaine (aka Val, played by Louis-Dreyfus), John was reminded that the shield doesn't really belong to the government.

"It's kind of a legal gray area," she said.

The mid-credits scene showed John, who no longer has the Cap shield because Sam and Bucky took it from him, constructing a new one painted with the same patriotic colors. He also decorated it with his service metal.

This knockoff shield will likely not be as powerful as the real one that's made from Vibranium, the rarest and strongest substance that's found in Wakanda. But John's rage mixed with the enhanced abilities from the super-soldier serum indicate that the shield might still do some damage.

The scene also confirmed fans' suspicions about John getting a new shield. People noticed that he seemed to be holding a slightly different one in a mid-season sneak peek trailer released by Marvel on Monday.

Tension is expected to come to a head on the finale as John continues his mission to make Karli pay for killing Lemar.

Episode five showed that Karli and the Flag Smashers have begun pulling off the final mission in their grand plan: infiltrating the GRC's meeting in New York City to vote on the controversial Patch Act, which would move 20 million refugees back to their countries of origin.

Plus, Sam will confront Karli and the Flag Smashers with the help of Bucky, Cap's shield, and a new suit from Wakanda. And the villain named Batroc, who Sam thwarted on the season premiere, is determined to get revenge and kill the Falcon.