It is voiced by Brock Powell.
While the giant alien's behavior appears to be similar to that of an animal, it shows itself to be relatively intelligent when it uses a barrel to stop its cage from closing so that it can escape.
The alien showcases some vicious tendencies, grabbing Cavendish the moment it's close enough and snarling in his face. It has a strong sense of smell and uses it to sniff Cavendish's belongings and to later smell out some food. The alien is easily distracted by food and tends to focus on it above all else. Because of this, it was easily lured back to the ship by a trail of hotdogs.
The giant alien is a huge, red alien creature with a ring of thick, scruffy, lighter-orange fur around its neck. It has a large mouth with a bright blue tongue and a single dark-blue eye with a light-yellow sclera in the center of its face. The alien creature is quadrupedal, with two long legs in the front, and two in the back. Each of its feet has three sharp, light orange claws. The alien has a long tail with three orange spikes on either side.
In "Cavendish Unleashed", the alien is trapped in a giant cage on the Octalian ship, only to be unintentionally released when Cavendish pushes a number of random buttons on the control panel. The alien promptly grabs Cavendish and snarls in his face, escaping the ship. After getting lassoed by Cavendish, it drags him across the forest before Milo, Melissa, and Zack rescue him and help lure it back into the ship using hotdogs.
|The image gallery for Giant Alien may be viewed here.|
“Perhaps I should scream now. Yes. NGHAAAA!!!”
“An alien monster?!”
“Mr... Giant cyclops thing? W-we're gonna go now... please don't kill us.”
“Don't move! There's no telling what it might do...”
- Giant Alien was supposed to appear in "Sphere and Loathing in Outer Space" and have an entire sequence with Perry the Platypus battling it. The scene was cut due to time limits.
- The Giant Alien is the only character in Milo Murphy's Law that only has one eye.