Jillian Michaels is a Canadian voice actor born on May 10, 1977, in Vancouver, British Columbia. She began her career in the late 1980s and is also known professionally by the name Jillian Kosich. Michaels has built a extensive body of work, primarily contributing voices for English dubs of anime series and for Western animated productions at various studios in Vancouver.

Her career in anime voice acting spans several decades, with some of her earliest credits including a role in the English dub of the classic series Maison Ikkoku in 1987. Throughout the 1990s and 2000s, she became a recognizable voice in the industry, particularly through her work with the Ocean Group. She is well-known for voicing the young fox demon Shippo in the long-running series Inuyasha, a role she has cited as a favorite in her career. She reprised this character years later for the sequel series Yashahime: Princess Half-Demon, its second act, and related media, demonstrating a long-standing connection to the franchise. Another early anime role, as requested, is Sae Goto in the 1995 English dub of the OVA series Ogre Slayer.

Michaels' voice work in anime is extensive and varied. She contributed to several high-profile series, including providing voices for the Ocean Group dubs of Dragon Ball Z, where she voiced younger versions of characters such as Son Gohan and Son Goten. Her credits also include roles in Mobile Suit Gundam SEED as Aisha, Mobile Suit Gundam 00 as Linda Vashti and Revive Revival, MegaMan NT Warrior as Princess Pride, and Oban Star-Racers as Ning. In addition to these, her anime filmography features parts in Brain Powerd, Master Keaton, Project ARMS, The SoulTaker, and Galaxy Angel, among many others.

Beyond anime, Michaels achieved significant recognition for her work in Western animation, most notably as the long-time voice of the character Lloyd Garmadon in the popular series Ninjago: Masters of Spinjitzu. She voiced Lloyd for the first seven seasons of the show, from 2011 until 2017, and also provided voices for other characters in the series, such as Edna Walker and Maya. Her other Western voice credits include roles in Edgar and Ellen, My Little Pony, Bratz Fashion Pixiez, Barbie Dreamtopia, and Hero 108.

A recurring aspect of Michaels' work is her collaboration with a consistent pool of voice actors and studios within the Vancouver voice acting community, frequently appearing alongside performers like Richard Ian Cox, Kelly Sheridan, and Kirby Morrow in various projects, including the Inuyasha and Yashahime franchises. A notable achievement in her career is providing the singing voices for the characters Lacus Clyne and Meer Campbell in the English dubs of Mobile Suit Gundam SEED and Mobile Suit Gundam SEED Destiny, adding another dimension to her performance skills.