Aliens are fictional creatures who do not exist in real life found in Dillydale. There are a number of aliens in the series. Only one type of alien appears in Season 1. More aliens appear in Season 2 (such as Outer Space Apes). The aliens that are shown in the picture are seen in Season 2 episodes like Toys, Goo, Dance Dance Dance and Picnics.
- In Picnics, they are shown to create dotted line constructs with their antenna, which they use to gather food.