- She is voiced by the same voice actors as Ash Ketchum: Veronica Taylor (1998-2006) and Sarah Natochenny (2006-present).
- In the Winnie the Pooh/Teenage Mutant Ninja Turtles crossovers, she is the older sister of April O'Neil and the sister-in-law to Casey Jones.
- Delia made her first guest appearance in Pooh's Adventures of Ghostbusters II.
- Delia will join Tino and his friends in Tino Tonitini and the Ultimate Avengers: The Movie, Tino Tonitini and the Ultimate Avengers 2: Rise of the Panther, Tino's Adventures of The Invincible Iron Man, Tino's Adventures of Doctor Strange: The Sorcerer Supreme, Tino Tonitini and the Next Avengers: Heroes of Tomorrow, Tino Tonitini in Hulk vs, Tino Tonitini Goes to Planet Hulk, Tino Tonitini Meets Thor: Tales of Asgard, Tino's Adventures of Bebe's Kids, Tino's Adventure of Batman: The Brave and the Bold - Mayhem of the Music Meister, Tino's Adventures of Regular Show: The Movie, Tino's Adventures of The Proud Family Movie and other projects.
- Delia is seen in a flashback in Ash Ketchum Meets Tarzan and Ash Ketchum Meets Dumbo.