A statue worshiper
Believing in more than one god is called Polytheism. Such a person is a Polytheist.
A lunatic.
Such a person is a monotheist.
Not really sure what you mean, but if you were referring to a person who worships, you could call them a "worshipping fool, worshipping person etc.
If they are Christian statues, Christians generally call them icons. If they are non-Christian statues, Christians generally call them idols.
an idolater
a person who worships the devil
He / She is called a Believer
People who build statues are usually sculptors
cosmologist, I think
Idols.
A person who worships the sun is often referred to as a heliolater or a sun worshipper. They believe in the power and significance of the sun in their religious or spiritual practices.