Season 5 Episode 108: Avengers Assemble

If you count every single episode of Avengers Assemble from the very beginning (Season 1, Episode 1: "The Avengers Protocol") straight through to the finale, the 108th episode exists—but it falls squarely in Season 4, not Season 5.

Let’s do the math:

That means Episode 104 is the finale of Season 4 ("Civil War, Part 4: Avengers Revolution"). avengers assemble season 5 episode 108

Therefore, Episode 108 would be the 4th episode of Season 5 (Avengers: Secret Wars). Depending on the numbering source, Avengers Assemble Season 5 Episode 108 is most likely referring to:

Following the catastrophic destruction of Earth-616’s Avengers compound during the "Secret Wars" opening arc, the team is scattered across a patchwork planet called Battleworld. This planet is a terrifying hybrid of various universes controlled by the god-like God Emperor Doom (a version of Doctor Doom who wields the power of the Beyonders). If you count every single episode of Avengers

In Episode 108 ("The Dark Avengers"), the story focuses on Black Widow (Natasha Romanoff) and Hawkeye (Clint Barton). They find themselves trapped in a domain called the Warzone of Manhattan, ruled by a sinister team called the Dark Avengers.

This twisted squad includes:

The episode’s core conflict is identity. Black Widow and Hawkeye must convince the citizens of this warzone that they are the real versions, not the corrupt imposters. The episode is famous for a brutal hand-to-hand fight sequence between Natasha and Yelena, which homages the Winter Soldier style of choreography—rare for an animated children’s show.

In the ruins of Avengers Mansion, Captain America discovers a secret sub-basement that wasn’t on any original blueprint. Inside is a damaged Iron Legion drone—except this drone is running a fractured AI that contains fragments of every Avenger’s combat data. The “Phantom Signal” is an accidental SOS created by the AI trying to reboot itself using the Avengers’ catchphrases. The twist? The AI calls itself “The Caretaker” and claims to know the location of the real Iron Man. That means Episode 104 is the finale of