Which character to choose?

Hey guys. im working on my first mobile game. These buddies are candidates to be the main hero in the game. The hero doesn't like colors. He's like a Grinch, but in the colors world. You know who is Grinch?
Characters are executed in the gray palette. It shows their relationships with colors and it helps them to be more attractive with a bright background. Which variant do you like more? v1, v2, or v3? Thanks for your feedback, it's very important for me.