Thread:Jester of chaos/@comment-28302658-20160829181526/@comment-29486012-20160903154808

Here's what Feriss' ATT entry has to say about him;

Ferris Boyle, the Corrupt Corporate Executive who caused Dr. Victor Fries', aka Mr. Freeze's, accident, almost killing his Ill Girl wife Nora and rendering him unable to live outside of sub-zero conditions, was definitely this. So much that even BATMAN was astonished and disturbed at the aforementioned discovery. And he does such terrible behind-the-scene things that ruin the lives of others while publicly claiming to be a humanitarian. Seeing him brought to justice was one of the few happy parts of that episode.
 * Oh, it gets better out-of-universe speaking. Boyle's voice actor? It's none other than Mark Hamill, the same guy who voices fellow Batman Complete Monster, the Joker. In fact, Mark Hamill's performance as Boyle was the reason why he even got the part of the Joker, who was originally slated to be voiced by Tim Curry due to his work as Pennywise the Dancing Clown from It, but he was unavailable at that time for the part.

I'd say he's a nasty character, but not really CM-level.