Mae Whitman (All-In-One Romance, as Neptunia) Dionne Quan (later appearances)
Robot Trixie is a robot created by Ivan Prestonovich in the episode "All-In-One Romance" of "The All New Fairly OddParents!", alongside Robot Tootie, while the real Tootie & Trixie were fused together into Trixootie, thanks to Timmy and his Magic Muffin. Ivan also made several copies of her just incase something bad happens to Trixie Tang. Appearance wise, Robot Trixie is a near-perfect replica of her human counterpart. In her first appearance, she sounded like Neptunia speaking in a monotone robotic voice, while in the later appearances, she spoke exactly like the real Trixie Tang, due to Ivan making an upgrade so that the robot has artificial intelligence based on her real counterpart, along with a holographic disguise program that allows Robot Trixie to look exactly like her human counterpart. She can stay warm, even in winter, and is also waterproof. Robot Trixie also acts as a paper shredder.
In the Fairly OddParents/My Life as a Teenage Robot crossover movie, "Robothology" she had weapons installed and was converted into a crime-fighting robot by Sheldon, equipped with advanced weaponry within her body and possessing super strength and speed, much like XJ-9.