Disney Wiki has over 43,000 pages so has complex portable infoboxes requiring you to copy many parts to get them to work. As you want their look, you could copy their original (pre-portable infobox) template. I have changed your prop infobox to that, using their blue theme to match your wiki colors.
To use with VisualEditor, Template:Prop is stored in Templates.
That may or may not be true in general. However, in this case, both templates were pretty straight forward, self-contained, portable infoboxes. The version you provided is far more complicated than the portable one.
Ok, I do understand what you're trying to say but could you help me put that around the details of the character infobox because I'm not sure if I should put it around the details such as "Personality," and "Appearance"
If you are talking about the CSS and template, no. If you are talking about the content in the template, I am not sure. That depends on the interaction between the various licenses involved with the content.