Character design and colors define character overall! For example

What Disney Villains Can Tell Us About Color Psychology [Infographic] - Venngage

How to choose your character's colors - character design tutorial

ArtStation - Character and color pallet analysis for art direction

Tips 'N Stuff For Better Character Design

Character Design (Color)

How to Use Color, Shape, and Texture in Character Design

How to Design a Character: The Creator's Guide to Amazing Characters

Character Design Color scheme options by Randomladyaj on DeviantArt

What is character design? Good character design for film & games

What Disney Villains Can Tell Us About Color Psychology [Infographic] - Venngage

What is Color Theory?