While is the most prominent scripted drama with this exact S3E12 designation, "Survival of the Fittest" is a common title used across various series:

: A British reality "battle of the sexes" show that ran for one season with 20 episodes.

: Lip graduates from high school, a major milestone for the family. Despite his intellectual potential, he remains deeply cynical about his future, though the episode hints at his eventual move toward higher education.

: Frank is hospitalized and diagnosed with advanced liver failure. In a characteristic moment of denial and narcissism, he attempts to escape the hospital to continue drinking, despite being told that another drink could kill him.

As the season finale, the episode serves as a high-stakes turning point for the Gallagher family, focusing on themes of mortality, abandonment, and the cycle of poverty.

: After a season of struggling with low-wage work, Fiona manages to secure a steady corporate job at Cupkovich & Pratt. This marks a significant shift in her arc as she attempts to provide a more stable life for her siblings.