Main Trio[]
In the beginning of the season, Pierre makes it very evident for his disgust about everything to do with André and Skeeto. He shouts at the beetle when he crashes his party while bluntly ignoring the mosquito in episode 3. This is probably due to the fact his prejudice over that way of life compared to how the other two had grown up. However, Pierre's anger turns to a certain fear in episode 5, where he noticed the fact of the other two being where-ever he seemed to be. So the Butterfly goes researching.
Soon enough, he decides that instead of being scared. Both the beetle and the mosquito would be good assets to his team and, against Wills wishes, he goes to talk to the mosquito. Whom he knows is not in a gang and automatically assumes that he is the nicer one. His first proper conversation with Skeeto goes very well and he agrees to meet him again. Honoured about how nice the other had been to him before going back to his woman. When he goes back to Will, the copper puts another perspective on the situation. Which leaves Pierre in a confused position over actually whether Skeeto was just playing with him and as soon as he meets André again, in an hostile and scary enviroment. Pierre decides against it.
Throughout the school episode, Pierre learns how easy it is to get into his old cliques, part of him still having a connection with them both. Lebah figures this out. Admittedly, he discovers the whole case plans. It's only when the dance fully takes into place where Pierre realises his true selfish nature. The moment he hears about André and Skeeto having a date, and almost everyone else he knew having a role. He becomes easily angered and agitated. This puts a strain between him and the other two. Who he doesn't talk of acknowledge much. The three of them however, solve the case.
Pierre's jealousy continues when seeing André's and Ladybugs relationship, but it's at a much calmer level. He gets along with the other two much better and in episode 25. It is seen that he is willing to believe what André's telling him, compared to how he would have treated it in the beginning of the series. He has holds both of them as tenants in the house, and it's his scream that rings out during the shooting.
André Roveston[]
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Skeeto[]
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Others[]
Students[]
Lebah Miele[]
Pierre and Lebah started out as acquaintances. They never tried to get in each others ways and kept to their cliques. This pattern stopped, however, when André and Skeeto started to bully Lebah. Due to his intelligence, Lebah started to notice the patterns. The fact that ever locker he was shoved into, the butterfly seemed to be nearby and whenever his lunch was spilt over him, Pierre seemed to be always nearby to offer at least a tissue when his friends were around. That was until Lebah noticed the pieces of paper.
Lebah put two and two together, and was the first to find out about the trios secret identity, following André and Skeeto to the butterflies house. He found out all he needed to know. Unfortunately he busted his cover and out of the three of them, Pierre seemed the less annoyed. After the case was solved, he was offered a role by the Butterfly, much to the disgust of the others.
Ladybug[]
For a more detailed account of their relationship, see Pierre-Ladybug relationship.
Friends[]
Marcthus Ceris[]
Pierre has a certain fondness for Marc, even if he doesn't act like the way anyone would expect. In "The origins of Swallowtail", we learn that the two of them have experienced a relationship with each other. Pierre being attracted to Marc's 'bad boy' attitude. As shown, the two of them seemed to have a very happy and unique relationship for the next few years, experiencing no problems with one another and not letting anyone else get in between them. However, due to realising their fondness was more in a close friend sort of way, the two of them decided to end the relationship on very good terms and a year later, Marc was the first to know about Pierre moving, even going so far as to inform Pierre of his new gang life afterwards.
When Pierre comes back to Uptown, the two of them seem to be in the same upbeat terms as from when he had left. The two of them make general flirtatious comments to each other and keep pretty close. Pierre lets Marc take him on a night out with his gang, The Hawkmoths. By doing this, Pierre can't help but enjoy the way they act. Neglecting his duty of solving a case for this gang and his old life. It's only when it's suggested that the real culprits of this crime are said gang that Pierre turns much more serious about the situation. Part of him feels like it's his duty to Marc to prove everyone wrong, not wanting to know his ex boyfriend is in jail.
For a more detailed account of their relationship, see Pierre-Marcthus relationship.
Lash Populi[]
For a more detailed account of their relationship, see Flash-Pierre Relationship.
Family[]
Dakota Swallowtail.[]
Compared to most sibling relationships, Pierre and Dakota are very close. As children, they never seemed to fight that much and apparenlty got on with each other a lot better than any others used to in their neighborhood. They don't find it weird however, and choose to get along whatever anyone else tries to make out.
Dakota is the one person that Pierre confides in over any situation, he feels like he can tell her practically anything and in return, she can too. The two of them keep to a great trust. The two of them seem to pick each others sides over everyone else and it is overall perceived that Dakota and Pierre know things no one else know about each other.
Unnamed mother.[]
Pierre seems to have a good relationship with his mother, they have no issues with money or personal problems. She spoils him, as seen throughout the season when Pierre gets the 'usual package'. It's also noted that she lives far away, due to her not really being seen.....