firebug

noun

1. Pyrrhocoris apterus, a common red and black insect, that is the type species of the family Pyrrhocoridae.
2. (slang)A pyromaniac or arsonist.

   “But the firebug allegedly ran back inside yelling before he finally took off.”

   “In the video, she can be heard explaining to the firebugs that she has been working with victims of the wildfires that have destroyed thousands of homes and forced more than 100,000 people to evacuate.”