"In the year 3000, a young entomologist and wildlife explorer named Dex Hamilton is called to action when alien insects start roaming about the galaxy creating a dangerouse rift between man and nature. He and his team of scientists, pilot Zap Monogan, the engineer Jenny Ten and "The Fantastic Frog Boy" Tung, set out to observe and catch these odd critters."
The main protagonist of the series, whom the title is named after. Dex is an intelligent alien entomologist with a crazy love of insects. He runs The Habitat, which his father ran before him, where he and the others maintain a large variety of different habitats in which they can observe insects they've captured for study. He has a broad australian accent. To put it simply, he is like a futuristic Steve Irwin.
A human/insect hybrid found by Dex a few months before the series. He has a very laid-back attitude which can sometimes get on the others' nerves, but in a dire situation he'll always drop the act. He's the strongest in the group, and can grow insect wings that allow him to fly. He's also the group's pilot. It is eventually revealed that Zap was created to be a powerful weapon by an evil scientist who used his own DNA to create Zap's human side. When his insect side takes control and runs rampant in the city, Jenny 10 manages to calm him down and he returns to his human form. Zap appears to have fallen for Jenny 10, although he probably won't admit it.
Created as part of the 'Jenny Project', Jenny 10 now works as Dex's mechanic at The Habitat. She maintains the insect's habitats and builds the weapons used by the team to capture new bugs. She's always known that she was part of the 'Jenny Project', but she only told the others when Jenny 8 showed up. The project was designed to create ten genetic clones each with their own unique ability. Jenny 10 has super intelligence and Jenny 8 can turn invisible, but the other eight Jenny's abilities were unknown. They appear to have perished in an accident at a young age, which Jenny 8 and Jenny 10 escaped. Over the series, Jenny 10 has developed strong feelings for Zap.
A human/frog hybrid from another planet. Tung tends to have disgusting hygiene habits and strange taste in food. He can jump long distances and scale walls with little effort, and also has a long tongue, hence the nickname. He sometimes gets in trouble for eating the insects captured on a mission.