Roswell Conspiracies: Aliens, Myths, and Legends

Roswell Conspiracies: Aliens, Myths & Legends is a 1999 - 2000 American animated sci-fi series that aired in first-run syndication as part of the BKN cartoon programming block.

In the series, bounty hunter Nick Logan (voiced by Alex Zahara), is drawn into the world of alien conspiracies when his newest 'target' turns out to be Sh'lainn Blaze (voiced by Janyse Jaud), an alien whose ancestors landed on Earth in 527 BC. From her, Logan learns that many of the world's legends, monsters, gods, and heroes were all connected to (or were) various alien races who have secretly lived on Earth. Logan, who has the ability to see aliens in their true form, even when disguised as humans, teams up with Blaze to stop attempts by hostile aliens to threaten, conquer, or destroy humanity.

When Giants Walked the Earth (Season 1, Episode 21)
A group of archaeologists reawaken a giant creature that may not have the Earth's best interests at heart.