The phrase "custom character" refers to a unique and specially designed person or thing. It is something that is made or tailored to fit a specific individual's preferences or needs. Full definition
Those upgrades provide your agent with perks, talents, and skills that can be assigned to create your own custom character build. (bitcultures.com)
Prices will range between $ 30 for a basic doll to $ 50 and up for custom characters depending on complexity and cost of materials. (maggiewang.com)
The extremely witty dialogue displayed throughout this game is made even more fun through the creation of custom characters that can be used on your journey. (metacritic.com)