Thank @vikbuddy,
You answered my question really well. Bringing characters into different settings brings out stories and adventures.
They have another scary story of how they lost their mother in a forest fire. This is one of the reasons they were so eager to leave kangaroo island and the reason koko was scared so much. Koko is based on a real person I know but not me. Kiki is his sister. Their father pa is just a happy dad who is willing to do anything to help his family.
They do visit the human world like at Zencudo Beach but I just brushed over any human dialog. Perhaps they could make their way to South Korea and meet that guy.
!LUV