The name HUD means:

  C - COMPRESSION
  I - INVARIANT
  R - ROW-ECHELON FORM OF A MATRIX
  C - COFACTOR
  E - EXTERIOR ANGLE OF A POLYGON

Circe means:
Greek mythology this African witch transformed the Greek troops of Odysseus into swine

  C - COVERABLE
  O - OVERWEIGHT
  L - LATITUDINAL
  L - LIGNIVOROUS
  E - EVADABLE
  E - EVAPORABLE
  N - NONBIOLOGICAL

Colleen means:
Girl

  H - HORIZONTAL COMPRESSION
  U - UNCOUNTABLY INFINITE
  G - GLOBAL MINIMUM
  O - ORDINATE

HUGO means:
Intelligent