Mimmi

Mimmi is a new mermaid in Mako: Island of Secrets. She is portrayed by Allie Bertram. From Season 2 on she is one of the main characters.

She is Zac's long lost biological sister. While she was ecstatic to learn he was family, Mimmi wasn't able to comprehend Zac's depression period afterwards; since his entire identity as a land boy was a lie.

Links

 * Mimmi's Page on H2O Universe wiki