Vampires are entirely fictional none have walked the earth.
Earth's Moon
Vampire Earth was created in 2003.
.this is no entirely true but JUdas the man who betrayed Jesus was doom the walk the earth in the night forever so there have been a few myths and such about him being a vampire but no it never says VAMPIRE
in vampire.
You would get "frostbite".
It depends on the lineage, some can.
Day walker
yes
In most contexts, "earth" is not capitalized unless it is being used as a proper noun, as in "Earth" to refer to the planet. So for your example, it would be correct to say "walk on the earth" with "earth" in lowercase.
I is called: Vampire Diaries #1: The Awakening
Yes, the vampire
Bill compton