In the late 1980s, Blaustein worked for
Marvel Comics, as an editor (several issues each of
Web of Spider-Man,
Marvel Tales, and
Marvel Saga) as a writer (several issues of
Conan the King), and penciling a one-shot of
Power Pachyderms. With assistance from her partner Yves Fezzani – sometimes billed together as "Adam & Yves" – she wrote issues of flagship titles
Hardware and
Static (in which she co-created the character Karmon Stringer/Rubberband Man). She also wrote (with Fezzani) Milestone's first limited series
Deathwish, which featured as its central character transgender female police officer Marisa Rahm, one of the first trans heroes featured in mainstream superhero comics. During this time she was sometimes referred to in editorial copy in the comics as "Addie Blaustein". After leaving Milestone, she served as Creative Director for
Weekly World News. Blaustein was a voice actress at
4Kids Entertainment, where she worked on the English dub version of the
Pokémon anime. She provided "filler" voices for various characters until episode #31, when she took over from
Nathan Price in the role of Meowth, which she played through season 8. During the
2004 Democratic Party presidential primaries, she voiced
Sméagol on
The Mike Malloy Show, announcing a satirical presidential bid. Beginning in 2004 under the pseudonym "Kendra Bancroft", Blaustein was a content creator on the
Second Life platform, ==Personal life==