Zero is less nothing but more not something or rather abscence of things (that allow the user to individuate matter in space and therefore make sense of the world.) Or it can be (in this particular case) the opposite of hero as in from zero to hero or vice versa.
"That chap needs to spend less time trying to define deeply complicatedphilosophical issues like zero and more time time trying to get a job."
"Your right, he's a real zero."
The mathematical representation a.k.a 0 is rendered as signature for my name, and the sign for nothing in mathemaical terms. Invented by the Arabs and the fundamental 'first digit' of the prevailing mathematical system we use today (but not the lowest value). It is characteristic by being an irrationally acting number compared to all others and is the only number which when added to itself does not change value.