| Charles Edward Eppes | |
|---|---|
| Numb3rs character | |
 David Krumholtz as Dr. Charles Eppes | |
| First appearance | "Pilot" |
| Last appearance | "Cause and Effect" |
| Portrayed by | David Krumholtz |
| In-universe information | |
| Gender | Male |
| Occupation | Applied mathematician FBI mathematical consultant Author |
| Family | Alan Eppes (father) Margaret Mann-Eppes (mother; deceased) Don Eppes (brother) |
| Spouse | Amita Ramanujan |
Charles Edward Eppes, Ph.D., is a fictional character and one of the protagonists of the CBS crime drama Numbers. He is portrayed by David Krumholtz.
Eppes is portrayed as a young mathematical genius and professor of applied mathematics at the fictional California Institute of Science, CalSci (primarily based on Caltech, where some filming and mathematics consulting is done). As a world-class mathematician, Charlie helps his brother Don Eppes solve many of his perplexing FBI cases, sometimes with the help of his best friend, mentor and colleague Larry Fleinhardt, and his on-again/off-again girlfriend, former student and now wife, Amita Ramanujan, who further refines Charlie's approach and helps him stay focused. Charlie has consulted for the National Security Agency (NSA), in part as a cryptanalyst, for nearly five years, having attained TS/SCI security clearance. It was revoked at the end of season four after he transmitted information to Pakistan, but was later re-instated.