ANGLO-SAXON RIDDLE???

[nenemaru_18]

This is my assignment in my English Literature class...
It is my own Anglo-Saxon Riddle...
Can you guess???


"I am a fiction.

I am no human;

But I protect the Earth.

I first came in 1966;

And my descendants continue my mission.

I came from a land full of light.

I fight aliens and monsters for the universe's sake

Though large in size, I could still manage to go along with humans and be like humans."