When X-Cutioner's Song captures a played Hero with no Villain in the city, who takes it?

Question

Accepted Answer

The Mastermind captures the Hero, as it would a Bystander from the Villain Deck. The Mastermind gets no Attack bonus from it, because it is not a Villain.

Legendary: A Marvel Deck Building Game

When X-Cutioner's Song captures a played Hero with no Villain in the city, who takes it?