Bart Simpson is the main antagonist of The Simpsons Treehouse of Horror VII segment "The Genesis Tub".
After Lisa's tooth fell out and a living, slowly evolving civilization was created within a dish thanks to cola and electricity for a school science fair, Bart would constantly harass Lisa and playfully cause terrorism in the tooth's civilization, causing it's people to consider Bart as their devil, while Lisa is their god. However, in the end, Bart would simply bring the dish and it's civilization to Skinner during the school science fair, with Lisa trapped inside for eternity due to not being able to go back to her normal size.
Biography[]
When Lisa's tooth fell off, she had the idea of putting it within a dish made of soda. Bart then came in with an electric balloon attached to his head and electrocutes Lisa several times before running away laughing playfully. Little did he know is that the electricity Bart gave to her would later result in a civilization being slowly created from stone age to a far futuristic town in a matter of days.
Bart would notice this and take the dish away from Lisa to look within it, surprised to see that a modern city was created inside the dish. He then decides to playfully put his finger inside it in many places while pretending his finger had slipped, which causes tiny buildings to be destroyed, as Lisa then takes the dish back from the latter, who runs out laughing again. However, this would later turn against him as during the night, he would be ambushed by aerial ships from the same civilization who want revenge against Bart for causing mayhem in their town, which disturbs his sleep.
Bart, his head now filled with wounds caused by the civilization, goes inside Lisa's room furiously. This leads to an argument where Bart berates her for having little airships attack him while he was asleep, with the latter saying that this was a comeuppance for destroying their little town. As Bart backs away, he threatens Lisa by saying that she can't protect them at all times and that eventually she will let her guard down, which would allow him to flush the dish down the toilet, causing the entire town to be exterminated.
Lisa would eventually be brought inside the civilization thanks to Professor Frink's debigulator, where she is honoured as a god. As she was worshipped, Lisa is told that she was brought in there in hopes of putting an end to the "devil", who is later revealed to be none other than Bart himself, causing the crowd to panic. Lisa laughs it off, as she mentions that Bart is her brother, which shocks the civilization.
However, Bart would later come back inside Lisa's room, leading to a mass panic within the crowd as they see the "destroyer" approaching. He would then reach his hand inside the dish in an attempt to presumably crush them, including Lisa. As the latter screams to her presumed demise, it turns out that Bart simply brought it to the school science fair, making him the winner as Skinner throws out all the other projects. Despite this, he doesn't notice Lisa still trapped inside the dish, attempting to tell Skinner that she was the one who made the science project and should have been the winner instead of Bart, but to no avail.