I'd like to establish the common name for visual effects supervisor Kee-Suk Ken Hahn. There's a re-recording sound mixer by the name of Ken Hahn who's throwing off the raw CLT numbers in a big way. Here are the visual effects guy's credits:

KEE-SUK KEN HAHN (3 titles, 3 confirmed):
- Ghost Rider (confirmed by Kluge)
- Hancock (confirmed by Kluge)
- Spider-Man 3 (confirmed by T!M)

KEN HAHN (2 titles, 2 confirmed):
- Men in Black 3 (confirmed by T!M)
- Mission: Impossible: Rogue Nation (confirmed by T!M)

KEE-SUK HAHN (1 title, 1 confirmed):
- Edge of Tomorrow (confirmed by Kluge)