Some of her major roles are Kallen Stadtfeld in the Code Geass series, Miyuki Takara in Lucky Star, Nina Fortner in Monster, Rider in Studio Deen's Fate/stay night, Suigintou the first Rozen Maiden doll in Rozen Maiden, Sawako Yamanaka in K-On!, Sola-Ui Nuada-Re Sophia-Ri in Fate/Zero, Momo Hinamori and Soi Fon in Bleach,[2] as well as Sky in the Shantae series and Rouge the Bat in the Sonic the Hedgehog series.

Strassman enjoyed acting at a young age, and was involved in school plays.

[3] In an interview with Slink FM, she said she picked psychology as a ways to earn a living in case theatre did not pan out.

After a year, she was offered a paid position where she trained older French actors on how to act in English.

[3][4] She provided voice over work in French for Air France, Euro-star, Disneyland Paris, and for audio tours of The Louvre and the Musée d'Orsay.