Strong is the voice behind a multitude of North American animated characters, including main roles in The Fairly OddParents as Timmy Turner and Poof; The New Batman Adventures as Batgirl; Fillmore! as Ingrid Third; Rugrats and All Grown Up! as Dil Pickles; The Powerpuff Girls as Bubbles; Ben 10 as Ben Tennyson, Upgrade, Benwolf, and Buzzshock; Xiaolin Showdown as Omi; Teen Titans as Raven; Drawn Together as Princess Clara and Toot Braunstein; The Adventures of Super Mario Bros. 3 and Super Mario World as Hip/Lemmy and Hop/Iggy Koopa; Foster’s Home for Imaginary Friends as Terrence; Transformers Animated as Sari Sumdac, Slipstream, Slo-Mo, Strika, Red Alert, Mayor Edsel’s press secretary, and additional voices; Sym-Bionic Titan as Ilana Lunas; Chowder as Truffles; the singing voice of Meg Griffin and additional voices on Family Guy; 101 Dalmatians: The Series as Spot/Two-Tone; My Little Pony: Friendship is Magic as Twilight Sparkle; and currently voices Betty Boop in commercials with Tress MacNeille.
She has also lent her voice to English-language localizations of Japanese anime such as Spirited Away, Sailor Moon, Shaman King, and Princess Mononoke, as well as several video games, including her work as Elisa and Ursula in Metal Gear Solid: Portable Ops; Paz Ortega Andrade in Metal Gear Solid: Peace Walker; Seth Balmore in Lost Odyssey; Rikku in Final Fantasy X, its sequel Final Fantasy X-2, and Kingdom Hearts II; Norma Beatty in Tales of Legendia; Talwyn Apogee in Ratchet & Clank Future: Tools of Destruction and its sequel, Ratchet & Clank Future: Quest for Booty (both of which reunite her with her Final Fantasy X and Drawn Together co-star James Arnold Taylor) and Harley Quinn replacing Arleen Sorkin in Batman: Arkham City. Numerous sources have stated that she also voiced Bowser Jr. in Super Mario Sunshine and went uncredited for the role.
She has appeared in live roles in National Lampoon’s Senior Trip, Sabrina Goes to Rome, Sabrina, Down Under, Mosquito Lake, and The Last White Dishwasher. She also made guest appearances on such shows as Forever Knight, Street Legal, Touched by an Angel, Take Home Chef, Party of Five, Comic Book: The Movie, Kung Fu: The Legend Continues, and 3rd Rock from the Sun. She has the role of the character Miss Collins in Nickelodeon‘s live action series Big Time Rush. Strong has been nominated four times for an Annie Award, and once for a Daytime Emmy and she will voice Roxy of Winx Club,which will be broadcast on Nickelodeon.
In 2004, she won an Interactive Achievement Award for her role as Rikku in Final Fantasy X-2. She also served as the announcer for the 2000 Kids’ Choice Awards, appeared as a guest at several fan conventions (including BotCon, Jacon, Comic-Con International, and Anime Overdose), and was featured on the front cover of the July/August 2004 issue of Working Mother magazine, saying, “My son is now old enough to respond to my work. To me, that’s what it is all about.”