Pink

Pink is far more serious than she has any right to be. She's firm, strong-willed, and won't let anyone mess with her. She pushes herself to her limits, and wants to be far greater than what she is. Both for herself, and to protect her brother, who she cherishes dearly. For that reason, she can often come across as cold and blunt, as she sees most people as a challenge she wants to overcome in a level of skill. She gets upset at people being better at her, because it makes her feel vastly inferior, but Pink internalises it and bottles it up as loathsome motivation to drive her onward. Pink carries the responsibility of herself and her brother Pinto on her shoulders, even when she really doesn't need to. She just feels like she HAS to - for both of them.