the lowest of the low
Synonyms
Examples
An office boy in London was the lowest of the low. The office boy was the tea boy. He would be the dog's body: It means someone who would do anything at all. I was quite prepared for that and enjoyed it.
What am I in the eyes of most people - a nonentity, an eccentric, or an unpleasant person - somebody who has no position in society and will never have; in short, the lowest of the low.