The Countdown to Doomsday Arc is a story arc in Super Smash Bros. Crossover. It is centered around the final step of Wiseman's master plan.
Wiseman (Main Antagonist)
- Bakugan: Nonet Bakugan
- Samus Aran (Brainwashed)
- Zombie Wasp (Brainwashed)
- Sakura Haruno (Brainwashed)
- Pichu (Brainwashed)
- Anubias (Brainwashed)
- Wiseman is seen in his mask for the first time since Serena's death.
- This arc marks the debut of the Haywire Aliens.
- It is revealed that Zelda has been corrupted by the Razenoids.
- This is one of the shortest arcs in the series.