She has performed in numerous films and television shows, including extensive voice work in animation.
1933
Iona was born in Columbus, Ohio, and is the daughter of late actor Greg Morris (1933–1996) and older sister of Phil Morris.
Morris was the original voice of Storm in the X-Men and Spider-Man: The Animated Series.
1994
Her voice work also includes Medusa in the 1994 Fantastic Four series, Claudia Grant in Robotech, Nia/Betty in Phantom 2040, Luba on W.I.T.C.H. and Principal Stringent on Chalkzone.
When she was a child, she appeared (with her brother and future recurring Trek guest actor, Phil) in an episode of the original Star Trek entitled "Miri".
Later, Iona appeared in the two part episode of Star Trek: Voyager, "Workforce" and was one of few to star in one of the episodes of the second Twilight Zone series.
She has also made numerous guest appearances on many television shows, including The Wayans Bros.
2006
In 2006, she was the voice of Jean Grant in Robotech: The Shadow Chronicles.
She also appeared as Colonel Louise James in the cinematic version of Command and Conquer 4.