I have been many things in my life. Specifically, and in order, a monkey, a knife, a junkie, an alien, a lunatic, a cat, an aristocrat, a clown, and finally, an earthling.
What or who am I, and what do each of these things refer to?
Hints:
The first was eponymous, the second a change, the third an explorer, the fourth an idol. The fifth just a lad, the sixth quite cool, the seventh pale and waifish, the eighth fond of ashes, the last a technophile.
My left is big, my right changes size.
Little Liza, Gnome, Andy Warhol, Starman, Drive-in, Big Brother, It's not the side effects, Little green, I'm afraid.