He scoured the globe gathering information on the Avatar, from the icy South Pole to the heart of Ba Sing Se. His sources included "singing nomads, pirates, prisoners of war, and a surprisingly knowledgeable merchant of cabbage".
Writing The Boy in the Iceberg, Pu-on Tim spent weeks at a time on the road, stayed up for days, researched leads, and followed the Avatar. He often described the experience of following the Avatar as a "painful and blurry dream", something that nearly drove him insane. However, his work resulted in him having hundreds of scrolls filled with notes about the Avatar, and he could not have been happier with his unbiased view of the Avatar and his companions. He called The Boy in the Iceberg his "masterpiece", though other critics were less kind about the play, calling it merely "watchable".
- Pu-on Tim's name consists of two parts: "Pu" ( ), is a Chinese surname meaning "beach", and is one of the Hundred Family Surnames. On-tim ( ), his given name, roughly reads as "increasing peace". The character is also used in Aang's name. His name exclusively uses the Cantonese readings of the characters.
- Pu-on Tim is named after Avatar writer Tim Hedrick, as a humorous play on the words "poo on Tim". His appearance is also modeled off of Hedrick.