Ep 15. Nemesis

Finn and Jake set out on another exciting adventure in season 6 episode 15 of Adventure Time titled "Nemesis". This particular episode centers around Finn's competition with a mysterious new character named Fern, who has the same exact appearance and abilities as Finn himself.

Initially, the two characters get along quite well and decide to go explore a maze-like structure together. However, things quickly take a turn for the worse as Fern begins to exhibit a more aggressive and hostile demeanor towards Finn. This leads to a showdown between the two where they must battle it out to determine who is the superior fighter.

Throughout the episode, we also see flashes of Finn's past and how he has previously dealt with others who have challenged him. These flashbacks add an extra layer of depth to the character and provide insight into his motivations and insecurities.

As Finn and Fern continue to fight, they both begin to realize that they are more alike than they initially thought. They both struggle with doubts and fears, and they both have a deep desire to prove themselves to others.

Ultimately, Finn and Fern's battle is interrupted by the appearance of a common enemy. Together, they must put aside their differences and work together to defeat this new foe.

Overall, "Nemesis" is an action-packed episode that explores the themes of competition, insecurity, and the importance of teamwork. Adventure Time fans are sure to enjoy the exciting battles and character development that this episode has to offer.