- Helman worked Zoë Kravitz and Nicholas Hoult in Mad Max: Fury Road.
- Originally, he was going to be cast as a young Cain Marko, a.k.a. Juggernaut in X-Men: Days of Future Past. But Juggernaut was written out of the film, and Helman was offered the role of a young William Stryker. Although Juggernaut appears in Deadpool 2.