Neeks' best. He came into Neeks' life during a time Neeks only wanted to be alone, managing to weasel his way into Neeks' heart within a few months. They don't always get along, but Plagg will always be there for Neeks and will make sure he's not off sulking somewhere. No matter how much Neeks tries to block off his heart, insist that he's better off alone, Plagg will always be there to tear down those walls and help him open up his heart to the rest of the pack.
He's the only one in the pack that knows of Neeks' true origins, and he wants nothing more than for Neeks to allow himself to be happy. He doesn't know what this mysterious wolf looks like, but he will be more than happy to fight her himself if it means Neeks can finally, truly smile again.
About a year after they met, Plagg and Neeks became mates.