Shimmer is very warm-hearted. She is a kind misunderstood woman, a natural talent that Shine, Glitter, Sprinkles, Sparkle and Twinkle were naturally born with from their mother. Shimmer seems to be over protective when it comes to family, especially around enemies of the family.
Shimmer has left the Wubb Girlz due to health conditions, Shimmer suffers from heart pains and hard breathing. Shimmer has also been brutally attacked from Sparkle, But has fully recovered and forgive Sparkle.
When Shine accepted Sprinkles into the Wubb Girlz, Shimmer was apparently infuriated by this and betrayed the Wubb Girlz, along with Sparkle. But it was eventually discovered that the one behind all the hacked accounts and chaos that followed was actually her sister, Glitter, who had been using her and the other Wubb Girlz all the time. And now, Murphy Dragonstar, her brother-in-law, hopes that Shimmer can forgive him and Shine for their actions against her. Although, that has changed, Glitter has made up her ways and prefers to stay on the good side of the family.