As he was the last fairy baby to born until now, his parents, Cosmo and Wanda, are the youngest parents on Fairy World and he, is the youngest fairy.
He is voiced by Tara Strong who also does Timmy's voice.
Because of his eyelashes and color, many people have confused him for a girl.
Poof only says his own name frequently ( "Poof, poof" ) but some of the characters strangely understand this. The only known person who seems to be aware that Poof just says his own name frequently appears to be Foop as shown in Spellementary School. Because of this, he is very similar to Yoshi and Birdo from the Mario series and most Pokémon.
Poof's first words in a sentence were "Yo, man. This gonna be so cool man. We're going to be bumpin', man. Tryin' to help the boys out. You know how we do it. You feel me, dawg?". Although, he had already said single words, like "mommy", "daddy" and "Timmy". He also said "Hide and seek!" in He Poofs He Scores.
In Wishing Well, he appears to have a great bond with Timmy, since he was the only other person enjoying the wishes that Timmy was making (Cosmo and Wanda were just worn out due to too many wishes being made). When Timmy was taken to Wishing Well due to overworking his godparents, he became so sad that he continued to cry until Cosmo gave him a Timmy doll which stopped Poof from crying.