NiCO is another brand-new character in DoA 6. A scientist turned fighter, she is sometimes called the Lightning Technomancer, because she uses a pair of electrically charged gloves that help her dole damage during fights.
Just like Kasumi, NiCO is a rush-down offensive character that utilizes the Pencak Silat fighting style. While that may mean her moveset isn't as visually stunning as some other fighters, it does mean her power level is high.
If you're a new DoA player, then you will probably enjoy NiCO as your main.