Bertha Boombooms is an original character created by MarrissaTheWriter to be Portal High School's "Alfa B****". She is described as having a huge butt and therefore inspiring "Kim Kandishian" and "Nicky Manajy", seeing as she has existed before them. Later, Meanie Pixies' Hour of Fame reveals her to originally have been Bertha Stiller, the daughter of Janet Roberts and Dick Stiller from Marrissaverse Stories 2015.
|Part of the Roberts family|
|In a relationship with Mr. Sanpe|
|No children known|
In Meanie Pixies' Hour of Fame, she is introduced as another attendant of the premiere of Beauregarde Chewing Gum Industry's Inside Out. However, as the premiere splits bases between Skepness Man Beauregarde and Aranna Sorket, the latter transforms her parents, as well as those of Louise London, to trolls, and decides to take Bertha and Louise with them to Belarus Nouveau using the Time Police's car.
There, Meanie Pixies decides on a rename of many of the characters. She eventually comes up with the surname Boombooms for Bertha and Louise, whom she considers to be more like sisters than second cousins. Bertha shows no objection to this, but nevertheless is angered by Meanie, who sees that Bertha has taken over the narration of the story. As Meanie tries to take the narration back, Bertha takes the Time Police's car back to Earth, where she first discovers Pokémon Go.
Years later, in HARRY POTTER AN THE KILL OF SNAPE, she commences with the act that she was introduced for. At first, she pushes Jenny Weasley so hard that the latter falls over, and Wheatly has to help her up. Therefore, Wheatly and Jenny immediately begin hating her.
Later, she is revealed to be practicing "blumia", which MarrissaTheWriter immediately condemns. Mr. Sanpe notices Bertha and leaves her in class, while dismissing everyone else, and thus Wheatly and Jenny take hint that the two are in a romance.
She is discovered to be the owner of a pony sex-trafficking ring by Wheatly and Skepness Man. While Bertha manages to escape the destruction of the operation, Wheatly shows photographs or her killing a pony named Flyhoof to ruin her reputation. Bertha then commits sewiside by jumping into a vat of acid located in the school cafeteria. This causes Louise to avenge her, taking out her anger on Jenny Weasley.
- HARRY POTTER AN THE KILL OF SNAPE (First appearance)
- Marrissaverse Stories 2015
- Meanie Pixies' Hour of Fame (Occasional narrator)