Nikki draws various creatures and objects on her Nintendo 3DS which ultimately come to life on the battlefield, acting as potential hazards. She can draw a Bullet Bill which deals strong damage and knockback as it rushes forward a Dragon that breathes fire which can be angled up or down a Spooky Ghost which chases after fighters and paralyzes them upon contact a pinwheel which spins and blows fighters away a flock of birds that charges upwards towards fighters launches them vertically and a Smash Ball. She has a more human design, rather than her Swapnote Mii appearance.
Official artwork of Nikki in Super Smash Bros. Ultimate.