Suggestions by @jurassicjohnny

Slippy Toad

as Snake codec special characters in Super Smash Bros. VI

Viridi

as Snake codec special characters in Super Smash Bros. VI

Rouge the Bat

as Snake codec special characters in Super Smash Bros. VI

Crono (Chrono Trigger)

as DLC Newcomers in Super Smash Bros. VI

Klonoa

as DLC Newcomers in Super Smash Bros. VI

Raiden (Metal Gear)

as DLC Newcomers in Super Smash Bros. VI

Doomguy

as DLC Newcomers in Super Smash Bros. VI

Reimu Hakurei

as DLC Newcomers in Super Smash Bros. VI

Rash (Battletoads)

as DLC Newcomers in Super Smash Bros. VI

Spyro The Dragon

as DLC Newcomers in Super Smash Bros. VI

Travis Touchdown

as Playable characters (base) in Super Smash Bros. VI

Crash Bandicoot (Character)

as Playable characters (base) in Super Smash Bros. VI

Jibanyan

as Playable characters (base) in Super Smash Bros. VI

Lip (Panel De Pon)

as Playable characters (base) in Super Smash Bros. VI

Chorus Kids

as Playable characters (base) in Super Smash Bros. VI

Andy (Nintendo Wars)

as Playable characters (base) in Super Smash Bros. VI

Bomberman

as Playable characters (base) in Super Smash Bros. VI

Shovel Knight

as Playable characters (base) in Super Smash Bros. VI

Sceptile

as Playable characters (base) in Super Smash Bros. VI

Sans (Undertale)

as Playable characters (base) in Super Smash Bros. VI