Game dev and modder WistfulHopes has released a number of mods for Guilty Gear Strive since it released last year, and recently has managed to add full characters into the game including series regular Sin Kiske and even Goku–complete with mechanics from Dragon Ball FighterZ.
While not a playable mod, or at least not yet, WistfulHopes released a video on her Twitter of Goku fighting seamlessly in Guilty Gear StriveVenir de Tragamonedas Gratis Online. Though most modded characters in games like Strive are simply added as cosmetic-only skins on top of existing characters, WistfulHopes’ Goku has been built for Strive from the ground up. The modder explained in the comments that she had to build certain DBFZ mechanics from scratch, including super dash.