Mica is a princess and daughter of Hirocon, the Argonian leader. She and a group of children are the last survivors of the planet Argonia — placed inside the time-frozen Three Magic Cubes twenty years ago, just before their world was destroyed. Their rescue is the culmination of Mike's long journey across the South Seas.

Zoda, the Prime Invader, is a ruthless alien warlord who invaded the Argonian home planet and destroyed most of their society. He came to C-Island in search of the Three Magic Cubes that would allow him to wipe out the entire Argonian race once and for all. He kidnapped Dr. Jones to aid in locating them, and will stop at nothing until they are his.