pissant

One that is insignificant.

An ant.

Not important; insignificant.

Worthless or of no significance.

An ant.

An insignificant person.

A person who adheres strictly to a rule or policy despite current circumstances.

A person seemingly incapable of focusing on anything but the trivial, especially in the sense of trivial or irrelevant criticism.

Insignificant or unimportant.