Depending on your specific need, here are the most common resources for these types of files:
However, since I cannot browse the live web to provide you with a specific, current URL (and because "Pixel King" is a somewhat common moniker for stock assets, retro gaming sprites, or even old flash game mods), I have written a blog post that treats this search as what it often is: a journey into digital archaeology. pixel king xml file download link
Search for the asset name alongside "generic XML." Many sprite sheets follow standard layouts. If "Pixel King" was part of a pack, look for the XML files of the other characters in that pack. Copy the structure, change the coordinates, and you have a working file. Depending on your specific need, here are the
Customize Your Camera Experience with XML Config Manager. Looking for a simple way to apply and manage camera configuration files? Google Play XML Configs: Camera Presets - Apps on Google Play Copy the structure, change the coordinates, and you