He's a rigorous man, with a touch of arrogance, slow, and a bit obsessive (in the sense that he has a sometimes OCD).
He's a sort of voice of reason. We always turn to him when it comes to laws.

His name, "the comma," comes from his tendency to interrupt his colleagues to add information he deems essential.

The comma's affinities with the other:

With "The conclusion." : Friend. Admire his work and his service.
With "The plush toy" : Friend. Finds her pleasant and enjoys her company.
With "404" : Tense Friend. Often argues but seems to get along.
With "The voice of the people" : Friend. Appreciate them.
With Nicolas : Tense. Don't really consider him human anymore.