- His X-Men character, Bobby Drake/Iceman, was the first character from the comic series to make an appearance in another medium, as one of the main characters on Spider-Man and his Amazing Friends. His character, and Ray Park's character of Toad, have both appeared in animated adaptations of the comics. In both, their characters were voiced by Frank Welker.
- Ashmore played Eric Summers in Smallville.
- Ashmore worked with Kevin Bacon and Adan Canto in The Following.
- Ashmore worked with Dominic Monaghan in the movie The Day and the video game Quantum Break.
- Ashmore voiced Iceman in the animated series The Superhero Squad Show.
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