By 
2B from NieR Automata is going to be in Super Smash Bros Ultimate… through a mod. 2D/3D artist and modder “Mastaklo” uploaded the mod onto their website. While it was initially a Patreon exclusive, it is now available to the public.
There is also a short trailer that Mastaklo released in February 2022 showing off how 2B will play. In the video, she faces off against Venom from Spider-Man and Fused Zamasu from Dragon Ball, showing off other mod characters that Mastaklo has made. It appears that Mastaklo used Lucina as she appears in Super Smash Bros Ultimate as the base for 2B.
You can watch the mod trailer here:
While this Super Smash Bros Ultimate appearance is unofficial, 2B will appear on television screens in the future as an anime character rather than a video game one. During the game’s fifth anniversary, Square Enix announced that an anime adaptation of NieR Automata is in production. 2B is also one of the crossover characters in Octopath Traveler: Champions of the Continent. Fellow YoRHa units 9S and A2 are also part of the event.
Super Smash Bros Ultimate is available worldwide on the Nintendo Switch. The 2B character mod for the game is available on Mastaklo’s website.
