There were two heroes that were released as Xbox exclusive DLC back during the original release - Kit Fisto and Asajj Ventress. The mod added them into the PC version by reskinning Ki Adi Mundi and Ayla Secura respectively. The Aspyr release uses the reskinned versions from the mod rather than the official models from Pandemic/Lucasarts which they presumably had permission to use but chose not to despite the fact that the original models don't have graphical errors and do have the correct fighting style/animations.