Alien

An alien is a non-human creature that did not originate on Earth. The Quest Team has encountered several alien individuals, species, and artifacts.

List of confirmed aliens
This is a list of elements and entities in the Jonny Quest series that are confirmed to be alien.

List of unconfirmed aliens
This is a list of elements and entities in the Jonny Quest series that are suggested to be alien, but it's unconfirmed.

List of fake aliens
This is a list of elements and entities in the Jonny Quest series that were thought to possibly be alien, but turned out to be terrestrial.