The Custom list character plugin allows users to choose and customize the characters used for bullet lists in Obsidian. It provides a simple interface where users can select from a variety of bullet characters, such as -, *, or +, and bind a hotkey to quickly create or format lists with their preferred character. This feature improves flexibility and personalization for note-taking. The plugin is also compatible with mobile setups, enabling easy configuration through the toolbar, and supports the customization of list character settings for a seamless editing experience.