Although the film never shows Bruno acting out or otherwise narrating his telenovelas, it’s generally agreed that Dolores somehow listens in and is deeply invested in the storylines.
Many fans have feel the reason Camilo describes Bruno as a seven-foot-tall boogeyman is because, as a very young child, some time after Bruno was thought to have left, he snuck into the kitchen one night, saw him and his rats digging through the cupboards, and quite understandably freaked out. Additionally, fans like to joke about Bruno constantly bringing up his nephew's verse describing him as a "scream-eating boogeyman" to tease and torment him.
Many fans believe that Bruno has Power Incontinence and has sporadic visions about random things that don't require the ritual, leaving him paralyzed with a glowing Thousand-Yard Stare. This helps explain the townspeople and Camilo's fear towards him.
Especially among Latin American fans, there is a theory that, because they are the same age, Mirabel and Camilo were roommates before the latter received his gift. To this is also added the belief that they are closer than what was seen on screen, and that Camilo may have tried to cheer Mirabel up the night she did not receive a gift.
Dolores has a soundproof room to give her some respite from constantly having to hear anything and everything. This situation was later confirmed by Word of God.
Many fans imagine that Camilo's room is a giant theater with thousands of mirrors, where people can see anybody except Camilo himself, adding up to the statement that he doesn't know who he is.
The theory that Mirabel lacks a gift because the miracle intended her to succeed Alma as keeper of the candle and head of the family is extremely popular. Even most fans who disagree with the theory like to think Mirabel will become the next Madrigal matriarch.
Señora Pezmuerto being a Chronic Pet Killer whose pet fish always die because she keeps them in tiny bowls, which she doesn't acknowledge and blames on Bruno.
While Alma shows no clear Parental Favoritism between her daughters in the film, many fans believe Julieta was her previous "golden child" before Isabela due to having the most useful gift (with no visible downsides) and strongest physical resemblance to her out of the triplets.
Since Mariano has very little characterization due to his small screentime, it's often popular to portray him as a "himbo" à la Jason Mendoza due to Mirabel describing the guy as a "big dumb hunk" during her argument with Isabela.
It is fairly common to see the duos of Isabela & Dolores and Camilo & Mirabel being portrayed as having a twin-like relationship due to the small age gaps between each respective set.note Just over three weeks between Isabela and Dolores (Isabela being the older) and just over two months between Mirabel and Camilo (Camilo being the older).
