Kritzkingvoid/Desktop_Gremlin ? reverse-engineered prompt

Build me a Windows desktop gremlin app in C# with a simple WPF interface that lets the user run a little animated pet on their screen. It should follow the mouse around, sit on top of other windows, and be easy to configure with a small settings window and a config file. I want options for things like turning click through on or off, showing or hiding the taskbar icon, changing sprite size, and adjusting how close it gets before following the mouse. It should handle transparent sprites properly and not block the whole screen unless that option is enabled.

Please make it feel like a playful annoying desktop pet, not a normal utility. If it helps, look up current docs online for anything you need. Keep the app easy to launch from one executable, and make it work nicely on Windows with a few built in character options or at least a structure that makes adding more characters simple.