There are 65 billion registered Betelgeusians, it is assumed most of them actually live on Betelgeuse.
Betelgeuse is part of a binary planet system where it and another, much larger planet rotate near each other but in their own orbital paths. Betelgeuse is a rather small planet in comparrsion to its neighbor; QT referred to its neighbor as "normal-sized" and Betelgeuse as "the little guy."
Most of Betelgeuse's surface is covered in water.
Betelgeuse has an Earth-like atmosphere and climate. When the Aloha Oe crew got stuck in a time loop on Betelgeuse in July, the temperature was 27 degrees Celsius (80 degrees Fahrenheit).
- Dandy and his crew spent 116 days on the planet in a time loop. They finally noticed on the 108th day with the aid of the Narrator, but it was until the day of 115 they took action.
- According to Meow, the most interesting place on Betelgeuse (or at least his hometown) is the Jal-Mart. In the Japanese version, he instead says its the local JUSCO (ジャスコ Jasuko) mart, a real life chain of hypermarts found throughout east Asia.
- The area of Betelgeuse seen in the episode appears to be based on rural Japan.
- Betelgeuse - Wikipedia article on the real life star Betelgeuse.