Super Smash Bros. Ultimate does its best to live up to its name by including every past fighter in the history of the franchise, but it doesn't stop there! In a recent interview with Japanese publication Nintendo Dream, Super Smash Bros. creator Masahiro Sakurai discussed how the game's massive roster was chosen and revealed why certain characters were excluded.
New Smash games typically like to add a new Pokémon fighter, and Ultimate went with Incineroar. As it turns out, this was a tough call, and the team strongly considered Decidueye as well. It came down to those two Generation 7 starters, but Incineroar ultimately won out.
Additionally, Sakurai was asked why Super Smash Bros. Ultimate has no characters to represent games like ARMS and Xenoblade Chronicles 2. This decision, Sakurai explained, came down to timing. Ultimate's roster was planned out well in advance, and there wasn't time to add in more fighters from upcoming Nintendo releases.
However, we do know that there are at least six DLC fighters on the way. On the topic of DLC, Sakurai also confirmed that the Fighter Ballot for Smash Wii U DLC influenced the base roster of Ultimate. Simon and Richter Belmont, Ridley, and King K. Rool all made it into Ultimate based on fan requests from the previous game.