To start, our final roster is made up of Ken, Incineroar, and Steve.
Seasons are released about every six months, and include five characters each alongside stages for most, if not all of them, assist trophies, items, ect. I don't know much about pricing for fighting game seasons, but I imagine they'd cost anywhere from $20 - $30 per season.
Shorly after release (free for those with Nintendo Online): Geno or Sora
Season 1: The Latecomers (
"These characters just barely missed the cut for Smash Brothers Ultimate, but we're excited to bring them to you now!") (Summer 2019)
Characters:
- Rex and Pyra
- Spring Man
- Octolings
- Banjo & Kazooie
- Geno or Sora &
Roxas (whichever one wasn't shortly after release)
Stages:
- Argentum Trade Guild
- ARMS Arena
- Deepsea Metro
- Click Clock Wood
- Dive to the Heart/Star Road
Assists:
- Zeke
- Twintelle
- Pearl and Marina
- Mumbo
- Riku
Season 2 : New Horizons ("
New series bring new challengers, stages, and more to Smash Brothers Ultimate!") (Winter 2019)
Characters:
- Isaac and
Felix
- Chorus Men
- Lloyd Irving
- Dante
- Yu Narukami or Joker
Stages:
- Venus Lighthouse
- Rhythm Heaven (similar to Warioware)
- Tales of stage
- DMC stage
- Shadow World or Sae's Palace
Assists:
- Menardi and Saturos
- Tibby
- Kratos Aurion
- Trish
- Yosuke or Futaba
Season 3: Long Time Coming ("
Patience is a virtue, and after waiting a long time these characters finally get their chance in Smash Brothers Ultimate!") (Summer 2020)
Characters:
- Paper Mario
- Dixie Kong
- Bandana Waddle Dee
- Tails
- Rayman and
Globlox
Stages:
- Hooktail Castle
- Sunset Shore
- Dedede's Palace
- Chemical Plant Zone
- Castle in the Clouds
Assists:
- Kooper
- Funky Kong
- Adeleine
- Silver
- Rabbids
Season 4: The Fan Favorites (*occurs after a second Smash Ballot that occurred following the announcement of Season 3) ("
You voted for these characters to have their chance in Smash Brother Ultimate, and here they are!") (Winter/Spring 2021)
Characters (speculated):
- Waluigi
- Lyn or Edelgard
- Arle Nadja
- Erdrick
- Crash Bandicoot and
Coco Bandicoot
Stages:
- Mario Stadium
- Ostia Castle
- Puyo Puyo
- Charlock Castle
- Cortex's Laboratory
Assists:
- Spike
- Tiki
- Puyo Puyo character
- Slime
- Crunch Bandicoot
Here's the roster visualized:
View attachment 167722