About Caren in pitch pitch mermaid

Caren is the Princess of the Antarctic Ocean. Caren is actually Noel's twin sister (the slightly younger twin, to be exact). Noel and Caren were born at the same time and at the same moment, even though they were born at opposite poles of the Earth. Despite the fact that they consider themselves to be twins, however, they have never actually met each other face-to-face. Still, Caren obviously cares a great deal about Noel. When she hears that Noel has been captured by Gaito, Caren vows to rescue her, no matter what.
Caren is a difficult character to understand. She first appears in ep.21, in her human form, when the mermaids entered a contest (Rina only entered because the grand prize was a flat screen T.V.). She also seems to have a mysterious interest in Mitsuki-sensei.
At first, even though Caren will not fully reveal herself to the other three mermaids, she still appears willing to help them out from afar.
In the ep.26, however, when Caren finally does reveal herself as Purple Pearl Voice, she also finally states that she has no intention of becoming friends with the other mermaids. She blames them (especially Rina) for Noel's capture. "I can't believe in any of you," she tells them. And she intends to rescue Noel by herself. Unfortunately, however, things don't exactly work out the way that Caren had planned...
In ep.67 Caren's pet penguin goes to Luchia,Hanon, and Rina for help b/c the ice from Caren's kingdom is melting too fast. They then find out