- Nunu is the name of one of the developer's dogs. He also uses it as a nickname for his wife.
- In thermodynamics, Absolute Zero refers to a state where the temperature of a system is at the lowest possible limit: approximately -459.67 degrees Fahrenheit, -273.15 degrees Celsius, or zero Kelvin.
- Nunu was designed by Guinsoo.
- The Yeti's name is Willump. This fact is often forgotten by players, who refer to both the boy and the yeti as Nunu.
- After changes to 基兰的 Chrono Shift AP ratio, Absolute Zero Absolute Zero has the highest single AP scaling of 2.5 damage per 1 AP in the game, although 卡特琳娜的 Death Lotus also has 2.5 scaling over the full channel on three or fewer champions.
- Nunu's base health at level 18 is the highest of any champion.
- Nunu is voiced by Cristina Ulloa, who also voices Amumu and Annie. Willump is voiced by Brian Sommer, who voices Tryndamere and Warwick.
- Nunu's taunt is a reference to The Hulk from Marvel Comics.
- Nunu's joke is a reference to President Theodore Roosevelt's famous quote, "Speak softly and carry a big stick."
- Grungy Nunu skin is a direct reference to two Sesame Street characters, Oscar the Grouch and the Cookie Monster.
- In the Chinese Sasquatch Nunu skin he is wearing a .
- Nunu Bot skin is a reference to Angry Goran's Nunu Bot series.
- The screens in the artwork also references the series, displaying the words "Push" and "Uploading A.I.".
- Demolisher Nunu skin is a reference to "Master Blaster" from the movie Mad Max Beyond Thunderdome.
- Nunu is friends with Ashe and Anivia.
- When Ashe became the Queen of Freljord, she appointed Nunu as Freljord's League Emissary. Nunu accepted her appointment proudly.