I like this, now I want to see Adrain set a building on fire
Marinette: Very much would never burn down a building intentionally. Still has burnt down a building. 5/10
Alya: Would joke about burning down a building, but wouldn't actually do it. 3/10
Adrien: Yes. 10/10
Nino: He would never. That would harsh his mellow. 0/10
Chloe: She absolutely would, but is repeatedly prevented from doing so. 6/10
Sabrina: Only when pushed to the absolute brink. 2/10
Mylene: Usually wouldn't but could be coerced if it was for environmental reasons. 7/10
Ivan: If Mylene wants it done, Ivan gets it done. 8/10
Rose: She would want to, but could never go through with it. 5/10
Juleka: She wouldn't really want to, but she knows how. And probably has. 6/10
Kim: He would set *himself* on fire. -10/10. Please stay safe, Kim.
Max: Max has way more efficient and controllable methods for destroying buildings. 1/10
Alix: Actually very careful. She knows her limits and does not set fires. Instead she travels through time to places that are already burning. Alix/10
Nathaniel: He would not admit it, but he has already done so and could very well do it again if you make him angry enough. 9/10
Lila: Ironically most of the fires she starts are metaphorical. But sometimes it's necessary for her schemes. 8/10
BONUS
Luka: He is an expert at starting fires. But he's also an expert at putting them out. 2/10
Kagami: Secretly really likes fire, and as such is kept away from it. 6/10
Marc: Fears fire with every fiber of his being. No arson here, folks. 0/10
Ondine: She's the queen of overkill, but she and Kim balance out. 10/10 becomes 0/10.
Felix: Tries very hard to set things on fire but gets blocked by his own plans and Adrien being Adrien. 5/10
Zoe: Capable and willing, but is too busy blockading Chloe. 4/10