Della is a duck who is a friend of Leap. She was the daughter of Mr. Websley. Her hobbies are swimming and being friends with Lily and Casey.
In Counting on Leap, she likes to swim.
In Leap's Friends from A to Z, D comes before E - which in fact, she comes before Emma Elephant. In the Math Circus, she was befriended by a rhinoceros.
In the video Learn to Read at the Storybook Factory, she plays as one of the Three Little Pigs.
She appears as a crowd participant in The Math Circus.
The Math Circus (cameo)
She appears as a pilot and an Alphabet Bus passenger in Leap's Big Day.
Her birthday is June 2nd, 1992; it states that her favorite season of the year is Summer. She is from Lincoln, Nebraska. It is examined that she is a year younger than Leap.
In Fair is Fair, she once argued with Tim; no one (including her!) payed attention to Lily and Casey, who are a bit jealous.
She is voiced by Isabella Marriott in 1999 to 2002 and later Terese Aiello in 2003-04 and Cindy Robinson in 2005-08.
