aliens (fictional characters)

Cassie believes her strange dreams are just a side effect of having been given the alien power to morph into an animal, but when she learns that Tobias has been having the same dreams about the ocean, they realize someone is issuing a call for help.

The Animorphs are in real trouble when they transform into flies to invade the new base of the alien Yeerks, and Jake becomes the enemy after falling into the Yeerk regeneration pool.

Marco is a reluctant Animorph, having been given the ability, along with four other friends, to change into animal forms by an Andalite prince, an alien who wants help in stopping an invasion of the enemy Yeerks, but when he discovers that his mom, who he believed was dead, has been taken over by the Yeerks, he finds a reason to fight.

The Rugrats babies become convinced that Earth is about to be invaded by space aliens.

Uncle Grigorian, who turns out to be an alien, takes the Price twins and their cousin Tubs to the capital of the Galactic Empire, where they serve as unbiased arbitrators in the Worm War.

Scrub arrives at his grandmother's Washington bed-and-breakfast only to discover she has opened the doors to aliens that arrive through off-Earth portals, and he must decide what to do when the local sheriff, already suspicious of Granny, notices some of the kids Scrub is chaperoning at a campout glow in the dark.

Jake and his friends are given the power to morph into animals by a dying alien who tells them the Earth is under attack by the invading Yeerks, and they are called upon to test their new abilities almost immediately when they learn that Vissar Three, deadliest of the Yeerks, is after them.

Tobias has stayed in his morph too long and must now live out the rest of his life as a hawk, but that does not keep him from contacting his friends and continuing the fight against the Yeerks, a race of hostile aliens that are invading and controlling the brains of humans.

Rachel and her friends run into a dying alien who gives them the power to morph into any animal they touch, placing the responsibility of saving the Earth from a silent, deadly attack completely in their hands.

Minnie and Moo come to the aid of a visitor from outer space.