- New Fighter: Spring Man from
ARMS. Added not only to promote
ARMS but because his gimmick allows him even further reach than Simon, and his colorful design fits in with the rest of the cast; he plays kinda like Little Mac, but his specials are completely different and his melee range is amazing but with lots of ending lag on his moves.
- New Fighter: Octoling from
Splatoon. Based off of the Agent 8 design and used to promote the
Octo Expansion DLC for
Splatoon 2, the Octolings are an echo fighter of the Inklings that have less ink reserves but do more damage and knockback.
- New Fighter: Rex & Pyra from
Xenoblade Chronicles 2. Pyra follows Rex similar to the Ice Climbers, and the closer she is to Rex the more powerful his moves are, forcing opponents to try and knock Pyra away from Rex if they want an easier fight.
- New Fighter: Edelgard from
Fire Emblem: The Three Houses. Added
to piss off the Smash fanbase to promote the new game and because as an axe wielder she'd be more unique amongst the
Fire Emblem cast.
- New Assist Trophy: Ninjara from
ARMS.
- New Assist Trophy: Poochy from
Yoshi.
- New Stage: Spring Stadium from
ARMS. Spring Man's home stage from
ARMS is brought directly into Smash.
- New Stage: Starfish Mainstage from
Splatoon 2.
- New Stage: World Tree from
Xenoblade Chronicles 2.
- New Stage based on the new Yoshi game.
- Returning Stage: Rainbow Road
- Returning Stage: PAC-MAZE
- Returning Stage: Jungle Hijinxs
New Music from Daemon x Machina, Xenoblade Chronicles 2, ARMS, and Fire Emblem: The Three Houses is included, including, but not limited to:
- Spring Stadium
- Ribbon Ring
- Ninja College
- Ramen Bowl
- Via Dolce
- Vs. Hedlok
- Battle!!
- Counterattack
- Incoming!
- Boss Battle II