“Mousetrap” or “Mouse” was a character in the HBO series Euphoria, portrayed by actor Algee Smith. The character was a drug dealer who was killed in the season one finale, leaving fans wondering who was responsible for his death.

In the show, Mouse had a complicated relationship with several of the main characters, including Rue and Jules. Mouse was a love interest for Jules, but he also sold drugs to Rue’s younger sister, Gia, and was involved in a dangerous drug trade. Mouse was also known to be a violent character, and had been involved in shootings in the past.
The identity of Mouse’s killer is not explicitly revealed in the show, leaving it open to interpretation. However, there are several theories about who may have been responsible for his death.
One theory is that Rue’s friend Fezco, a drug dealer himself, was responsible for killing Mouse. In the season finale, it is revealed that Mouse had stolen drugs from Fezco, which could have led to a confrontation between the two characters.
Another theory is that Jules’ father, who is shown to be a violent and abusive character, could have been responsible for killing Mouse. In the finale, it is revealed that Jules’ father is upset about her relationship with Mouse and has been tracking her movements through her phone.
There are also theories that Mouse’s death could have been the result of a rival drug gang or that it was an accident that occurred during a drug deal gone wrong.
Ultimately, the identity of Mouse’s killer is left open to interpretation, and the show leaves it up to the viewer to decide who they believe is responsible for his death. The ambiguity of the storyline is part of what makes Euphoria such a compelling and thought-provoking series.