To uninstall the Marvel Sketch Plugin:
- Open Sketch
- Select Plugins from the menu
- Select Manage Plugins
- Highlight the Marvel file
- Click on the settings icon below > uninstall Marvel
- Search in your spotlight search-bar for 'Marvel' - if it returns no results, this means it has been removed from all your computer folders.
Note - If you already have the plugin installed and are looking to update your version, you can find out how to do this here.