At Mortal Kombat 11's reveal event today, series creator Ed Boon showed off new character customization options the developers have added this go-round. You'll be able to "create, modify, and collect multiple versions of every character," Boon explained. This starts with different skins, or outfits, for each character, and the characters also have three costume pieces. In Scorpion's case, that's a face mask, katana, and his "get over here" spear.
Your customization will show up in battle, and it seems like there's also more than just cosmetics at play here. Each piece of equipment has three "augment sockets" you'll be able to do something in.
There's a lot to take in here from a short demonstration. The customization menu has tabs for Gear (where you can choose equipment and fill in those augment sockets), Kosmetics, which let you change skins, cinematics, victories, fatalities, brutalities, and end of round taunts. There's also an Abilities tab for selecting ability sets—presumably collected from various movesets across MK's long history—and finally an AI Behavior tab for customizing an AI fighter.
Here's what we've seen so far. More as we learn it.