This is the most common complaint. If you install a save file but still do not see the joke characters:
While there is no official "unlock all" save file provided by the developers, you can unlock all 52 characters on the PC version of Street Fighter X Tekken This is the most common complaint
Downloading an unlocked save file for Street Fighter X Tekken is . The game's roster is its strongest asset, and locking it behind a currency wall was a poor design decision. While the process of getting the file to work can be slightly technical due to Steam's cloud saving, the payoff—having access to the full roster instantly—is well worth the 5 minutes of effort. This is the most common complaint
Just let me know!