A mermaid living in the waters of the Interactive Dream Dimension.
Serena is kind and easily makes friends. She's safer in the water but likes to hang out on river banks and the seashore to chat with people and have fun. She can breathe best underwater but can stay out of the water for about fifteen minutes. She has healing abilities that she can use on others. Also, she can lead people to places by singing, whether it's for a good or a bad purpose. She wants to protect the waters of Interactive Dream Dimension. She's strong and capable of more than she thinks.
She often carries around a trident that she has richly decorated with plants and flowers. It's a very powerful weapon, given to her by her father before he was killed. She sometimes has some poisonous plants from the sea (that she is immune to) to use in case there are enemies. When she goes to a dangerous place she can bring fish along to protect her.
Serena is one of the last of her kind. Her parents have been killed by men from Getsus Enterprises. Her parents tried to fight back, but failed. That's why she feels like it's her responsibility to protect the waters of Interactive Dream Dimension from any harm caused by Getsus Enterprises.