https://www.gamespot.com/articles/e3-2018-super-smash-bros-ultimate-for-switch-will-/1100-6459707/

The next Super Smash Bros. game, Super Smash Bros. Ultimate for Nintendo Switch, was finally revealed on the Nintendo Direct presentation during E3 2018, and as they began to reveal the roster of playable characters, there was one thing that slowly became increasingly clear: Everyone is here.

Every single character that has ever appeared in a Super Smash Bros. game—from the original 12 characters featured in the Nintendo 64 games, all the way up to the latest DLC characters made released for Super Smash Bros. on Wii U—will be included as a playable character in Super Smash Bros. Ultimate.