Since the thread was lost, I thought I'd redo it.

Digital Fortress

Susan Fletcher- INTJ
David Becker- ENFJ
Commander Strathmore- INTJ
Hulohot- ISTP
Greg Hale- Asshole ENTP (But I repeat myself. )
Phil Chartruckian- INTP
Midge Milken- ESFJ
Chad Brinkerhoff- ISTJ
Director Fontaine- ENTJ
Jabba- ENTP

Deception Point

Rachel Sexton- INTJ
Michael Toller- ENTJ (?)
Senator Sexton- ENTJ
William Pickering- INTJ
Gabrielle Ashe- ESFJ (?)

Angels & Demons

Langdon- ENTJ
Vittoria- INTP
Camerlengo Ventresca- INTJ
Cardinal Mortati- ENFJ
The Hassassin- ISTP
Commander Olivetti- ESTJ
Captain Rocher- ESTJ
Chinita Macri- ENTP
Gunther Glick- ESTP

The Da Vinci Code

Langdon- ENTJ
Sophie- INTJ
Fache- ESTJ
Silas- ISFJ
Aringarosa- ENTJ
Vernet- INTP
Teabing- INTJ
Rémy- ISTJ

The Lost Symbol

Langdon- ENTJ
Peter Solomon- ENTJ
Katherine- INTJ
Trish Dunne- INTP
Mark Zoubianis- INTP
Warren Bellamy- ENTJ
Inoue Sato- ENTJ
Trent Anderson- ESTJ
Reverend Galoway- INFJ
Zack Solomon- ESTP
Andros Dareios- ENTP
Mal'akh- INFJ