Plagg/Relationships

Adrien Agreste
Plagg works with Adrien to help him become Cat Noir, but he doesn't show great amounts of kindness or dedication towards him most of the time. He once hid from Adrien instead of coming out to help him when Stormy Weather was on the loose, and the only thing that lured him out is Camembert. He often teases him, usually for his impossible love for Ladybug, or points out questionable decisions when he isn't opting for doing them himself. However, he refers to Ladybug as the love of Adrien's life and questions why he didn't take the chance to find out her secret identity after the battle with Lady Wifi. However, Plagg has shown that he does care for Adrien, like when he asks if he's okay when his father doesn't appear for parent show-and-tell at school and in "A Christmas Special" when he genuinely tells Adrien "Merry Christmas." Plagg once lets Adrien neglect his duties as Cat Noir, suggesting that he should have fun at his birthday party before trapping the Bubbler's akuma. He also gives him cheese, something he doesn't usually share, for his birthday, even though Adrien doesn't want it and Plagg eats it for him. Also, unlike Tikki, he doesn't pressure him when it comes to working. He is informative to Adrien at times, like when he warns him that they can't transform in "Rogercop" while Chloé's bracelet is stuck on Plagg's head, as it would damage Cat Noir's powers. In "Simon Says", Plagg looks concerned and sad for Adrien when Gabriel hugs him and leaves quickly when he notices Adrien's ring for the first time. Also as a sign that he cares, is in "Glaciator", believing that Adrien had a heartache, Plagg offers to share his cheese with him. Plagg also attempts to cheer Adrien up in "Captain Hardrock" by performing a brief concert for him when he wasn't allowed to go to his friends' concert.

In "Syren", when Adrien threatened to remove his Miraculous if Plagg doesn't spill his secrets. He admits in a way that Adrien is his close friend. But when Master Wang Fu arrives Plagg is relieved that he doesn't have to hide secrets from Adrien. In "Sandboy", he can easily tell the real Adrien from a fake Adrien quoting, "The real one talks nonsense but it's never this bad." Seeing the damage, Plagg hoped Adrien was okay and was relieved he survived his nightmare. After the ordeal he embraced Adrien for letting him have his freedom (mostly) and being the best Cat Noir ever.

In "Style Queen", he shows great concern for Adrien when he is turned into a golden statue by the villain. In "Frozer", Plagg jokes on how he greets a Camembert before eating it as an advice for Adrien who is unsure about whether Ladybug is his only crush after giving a rose to Kagami Tsurugi, though Adrien thinks that Plagg should give this piece of advice to someone else.

In "Mayura (Heroes' Day - Part 2)", Plagg rarely but also generously shared his Camembert with Adrien, which the latter, unlike how he normally would instinctively detest it, gladly accepted and he thanks Plagg.

Tikki
In "The Dark Owl", Plagg sees Tikki after Marinette and Adrien detransform, who shushes him when he expresses surprise. To regain his energy, Plagg accepts sharing a macaron with Tikki and they "know each other very well."

In "Sandboy", after leaving Adrien; he meets with Tikki on a rooftop affectionately calls her "Sugarcube". And yet, they both share the concern of contacting Nooroo. Before leaving Master Fu's shop again he saw that Tikki was really close and affectionate with her owner Marinette.

Marinette Dupain-Cheng/Ladybug
Plagg has never met Marinette, but in "Stoneheart", he teases Adrien by referring to him and Marinette as "two lovebirds". In "Dark Cupid", unaware that the Valentine's Day card came from Marinette, upon reading it Plagg comments "that anyone who writes as sickeningly sweet as you must be your soulmate." While watching Fill My Shoes in "Troublemaker", Plagg sees all the pictures of Adrien in Marinette's room, calling her another secret admirer.

In "Style Queen", Plagg officially meets Marinette and tells her of his owner's recklessness. During "Sandboy", he can see that Marinette is really close and affectionate with Tikki.

With Ladybug, Plagg knows that Adrien has a crush on her and how much she means to him, but he is skeptical about Adrien's feelings, reminding him that he doesn't know who Ladybug really is underneath the mask. However, he occasionally shows that he does get behind Ladybug and Adrien becoming a couple, like being upset with Adrien not staying around to see Ladybug detransform in "Lady Wifi". In "Riposte", Plagg respects Ladybug enough that he questions if Adrien should leave the place she hid him to transform. While not caring about it beforehand, he learns her secret identity in "Dark Owl", when he finds her plan to trick Dark Owl, involving detransforming, surprising.

In "Style Queen", Plagg saves Ladybug just as she was under the villain's mercy by performing Cataclysm onto the Eiffel Tower, buying Ladybug time to defeat her. She also sees the destructive power of his Cataclysm as it breaks the Eiffel Tower and replies saying "No wonder he wasn't allowed out". When she asked about Cat Noir's safety, Plagg assured her he'd watch over him.

Gabriel Agreste/Hawk Moth
Plagg and Gabriel have never met, and when Adrien suggests that his father is playing a prank on him with Plagg in "Stoneheart", Plagg adamantly warns Adrien that he can never reveal his secret identity to his father or anyone else. Although rarely commenting on it, Plagg can tell that a lot of Gabriel's actions toward Adrien make him very disappointed. The discovery of Gabriel's secret safe excites Plagg in "Volpina", though he quickly loses interest after seeing nothing interesting, other than thinking he may remember the book from somewhere.

In "The Collector", Plagg voiced concerns about Gabriel being able to see him thus revealing Adrien's identity as Cat Noir but was happy that kwamis couldn't be filmed or photographed.

Like Adrien, Plagg is unaware that Gabriel is Hawk Moth, but in "Sandboy" he shudders at the idea of being discovered by him.

Nino Lahiffe
Never having met Nino, Plagg knows that Adrien views him as his best friend. He reassures Adrien that they can save Nino from his akumatization after enjoying the party for a while in "The Bubbler", and he is very amused by Nino's attempt to reveal his feelings for Marinette in "Animan", listening to the conversation on Adrien's head.

Chloé Bourgeois
Although never meeting her, Plagg doesn't care much for her. He has fun teasing Adrien about him possibly being in love her Chloé when they learn about Alya's belief in Chloé being Ladybug in "Lady Wifi". He also invades Chloé's bag for what looks like a box of Camembert, and after learning it isn't, he plays with her bracelet before it gets stuck on his head, leading to a lot of problems, including getting Marinette in trouble.

Master Wang Fu
Similar to Tikki, Plagg is loyal to Wang Fu where he refused to tell Adrien any secrets in "Syren". But when Wang meets Adrien in person, Plagg happily introduces him. In spite of Master Fu being his guardian, as seen in "Style Queen", he disagrees with Master Fu's fact on how dangerous himself can be and doesn't listen to the latter, which implies that Plagg won't fully obey anyone including Master Fu other than Adrien.

Nooroo
Plagg is aware that Nooroo's powers are being used for evil and promises to free him one day. In "Sandboy", he knows that it's Nooroo's birthday and misses him dearly to the point where he cries.

Wayzz
Plagg and Wayzz seem to get along well with each other, though he seems insensible on how Wayzz feels crossed towards his destruction caused in the past in "Style Queen (Queen's Battle - Part 1)".