In the past, Super Smash Bros. had a little bit of customization with things like the item selection for stages, but the upcoming Super Smash Bros. will feature more than ever before. This time around, you can customize characters with their movesets and more.
In the game, each fighter has four special attacks for each direction. However, now you can choose between one of three different types, which can be acquired as you play. Palutena and Mii Fighters will be a little different as they have their own special customizable movesets. The custom parts cannot be used online, so prepare for just local battles with friends if you plan on using them.
Also, the game will feature equippable items, such as Max-Power gloves on Mario that will enhance parts of his fightings skills. While you may change equipment, the actual look of the fighters will not change as a result.