The Arsonist is one of the ghosts haunting the Haunted Mansion.
The Arsonist portrait shows a brown haired bearded man in a brown jacket wearing a black flat topped hat. He is holding a walking stick with his right hand and with his left he has clothing flung over his shoulder. He stands in front of a town burning down presumably because of him.
Much like the other Sinister 11 portraits the Arsonist's portrait features the "staring-eyes" effect which was accomplished by painting pupils on ping-pong balls cut in half. The eyes were cut out and the balls were set behind the portrait and lit, giving guests the impression that they are moving. Originally he was going to be a changing portrait where he would transform into a werewolf.
- Like Count Dracula, the Ogre and the Witch of Walpurgis he was originally supposed to be a changing portrait
- In the original Marc Davis concept art he stood outside of a non-flaming village built into the side of a mountain with a castle in the background. He also had a sack over his shoulder instead of random clothing.
- When he was meant to be a changing portrait he would have transformed into a Werewolf.
- In the finished portrait you can see the silhouettes of people in the windows of the burning buildings.