Besides updating a few skidding sprites with a minor fix for stray transparent pixels, this update's main feature is the introduction of replacements for vanilla in-game graphics of Knuckles.
This includes:
- Title-screen related graphics of every size (T2, T4 and T5, Knuckles only so it doesn't change other characters), including the unused old title-screen graphic (TTWING, entire image replaced since it's not deconstructed into parts like the final graphics are);
- Story intro graphics featuring Knuckles (GLIDE1, GLIDE2, INTRO5, CONFRONT and INTRO7);
- Knuckles' credits graphics (CREDIT03 and CREDIT06).
This covers Knuckles in the vanilla game as much as possible, ensuring that his appearance stays consistent even outside of his player character skin.