Well, after ~EStar99 (https://www.deviantart.com/estar99) discussing about Goombella, he decided that Goombella will be another main character of SMB Heroes of the Stars.
Well, the reason is about Goombella in his opinion that he likes her voice clips from Nicole Sullivan as Marlene from The Penguins of Madagascar, (and maybe Mira Nova from Buzz Lightyear of Star Command and Shego from Kim Possible; yes, both characters were also voiced by Nicole Sullivan), so :iconedalhoff345: wants she will be stapled in the Heroes of the Stars series and should stay with Heroes of the Stars after they get the 2nd Star Spirit.
Hope you understand what we decided.