I have a job, for which some people are responsible, say: a, b, c, d and e. If anyone does the job, it is marked as complete.
Now let us say c completed the job, so what would I call that person in one word (think completor - not a word).
It is basically for a database schema for a table of tasks which I have to define. Each task has a list of responsible people. Now as soon as the task is done by someone, it's completor field is to be linked to the person who did it.
So what I want is a suitable name for the completor field.