Catastrophe in Substitute Springfields!/References

General

References/Trivia

Appearances

Credits

Quotes

Cultural references

• The story's title is a reference to the "Crisis on Infinite Earths" storyline from DC Comics.
• In the story's opening text, the imperfect duplicates are referred to as "Berzerkos", which is a play on Bizarro, a DC Comics villain who is an imperfect clone of Superman and who often speaks in opposites. Bizarro also appears briefly as the Homer clone begins mutating.
• On the last page, when the panel displays all of the substitute Springfieldians, a substitute appears that looks remarkably similar to Fry from Futurama, Groening's other television series.
• Kang and Kodos' miniature city in a bottle is a reference to Kandor from the Superman comics, a Kryptonian city best known for being shrunk and captured by the supervillain Brainiac.