Create a new character with your desired look, then copy its appearance data into your main character’s save file using Notepad++ and Starbound's built-in file utilities. Step-by-Step: Manual Appearance Change
These mods provide an in-game way to re-open the character creation menu for an existing character. StarExtensions starbound change character appearance mod
The Starbound modding scene remains active. As of late 2025 (and looking into 2026), two upcoming changes will affect appearance mods: Create a new character with your desired look,
Even the best can hiccup. Here is a troubleshooting table: starbound change character appearance mod