It became clear from the musical episode of The Flash, featuring Melissa Benoist’s Supergirl, in 2017 that Grant Gustin, who grew up with aspirations of Broadway stardom, is a very musical person at heart. The same can undeniably be said about young Xavier Institute trainee Mark Sheppard, otherwise known as “DJ,” whose powers literally run on music and vary by whatever genre he listens to (i.e., healing people with blues, flying with gospel, conjuring concussive blasts with rock ’n roll, etc). Even if the part did not end up going to Gustin, I believe this incredibly inventive character deserves some screen time, especially as a reimbursement for losing his powers at the end of Marvel’s House of M event not long after his comic book debut.