  The Two Micron All Sky Survey (2MASS) is finding previously unidentified,
luminous red active galactic nuclei (AGN). This new sample has a space density
similar to, or greater than, previously known AGN, suggesting that a large
fraction of the overall population has been missed. Chandra observations of a
well-defined subset of these objects reveal that all are X-ray faint, with the
reddest sources being the faintest in X-rays. The X-ray hardness ratios cover a
wide range, generally indicating log NH ~21-23 /cm*2, but the softest sources
show no spectral evidence for intrinsic absorption. These characteristics
suggest that a mix of absorbed, direct emission and unabsorbed, scattered
and/or extended emission contributes to the X-ray flux, although we cannot rule
out the possibility that they are intrinsically X-ray weak. This population of
X-ray faint, predominantly broad-line objects could provide the missing
population of X-ray absorbed AGN required by current models of the cosmic X-ray
background. The existence of AGN which display both broad emission lines and
absorbed X-rays has important implications for unification schemes and
emphasizes the need for care in assigning classifications to individual AGN.
