Error00001 managed to put a playable version of Rolento into Super Street Fighter IV: Arcade Edition ver. 2012 on PC a while ago. The model had a couple of issues, specifically in that it wouldn’t hold on to its baton when facing left, but by all accounts it was totally playable. Now that the character is going to be included in Ultra Street Fighter IV, Error has created a subsequent video to show us how one might add Hugo into the game as well.
Apparently, all Street Fighter x Tekken characters have similar bones files, so it’s easy to swap models between them. Since Error already had Rolento’s converted over to Street Fighter format, he was able to easily take Hugo and place him in as well. Obviously, Error’s Hugo doesn’t have any of Hugo’s moves, instead using a mashup of Rolento’s and Dhalsim’s.
In addition, he’s said that he will never complete a conversion of the character because Capcom announced the official Ultra Street Fighter IV project. This video is just to provide a look at how it’s done, entertainment purposes only so to speak.