If Spring Man is the main character, Twintelle is one of the popular characters (up there with Min Min). While I personally don't expect any ARMS representation in Smash Ultimate via DLC, I do believe that its success will eventually lead to representation in the next Smash game (like fellow EPD franchises Pikmin & Splatoon before it). While Spring Man would be the obvious choice to add first (especially due to Sakurai's protagonists-first mentality with regards to roster selection), Twintelle would be a prime candidate for a 2nd character for the series. This is especially true since Nintendo seems to be pivoting towards Twintelle as the series' leading lady over Ribbon Girl as of recently. It also helps that Twintelle has her own gimmicks to set her apart from Spring Man (especially with her ability to slow down time while charging up her next set of punches). On top of that, she would help with Smash's lack of black/brown characters (which is part of the reason I went with Twintelle over my main in ARMS, Dr. Coyle), so the inclusion of Twintelle would be a slam-dunk on all fronts. And to be honest, Yabuki's ARMS team are one of the more progressive teams over at Nintendo EPD, & I'd love to see their hard work rewarded via Smash.