He had to find another.
He flew around until he spied another human, Mars noticed her chestnut brown hair, strange as he never bothered to study a humans gender, let alone hair. Either way they were all just prey to be devoured by his insatiable lust for blood.
He followed her for a bit, waited for her to be relatively alone with no other humans around.
He landed before her, his pale white face shining from beneath his cloak, almost appearing skeleton like, he drew his scythe and let his chain dangle into visibility.
"Hello there my sweet... are you prepared to die?" Mars smirked.