Answer: LEO

AnswerCrossword Clue
LEOAuthor Buscaglia
LEOAmbitious person, some believe
LEOShort reply to "Hey baby, what's your sign?"
LEOCertain August newborn
LEOSign for Bert Lahr, aptly
LEOBirth sign of Daniel Radcliffe (in true Gryffindor fashion)
LEOGorcey or Durocher
LEOTook the van
LEOMGM mascot
LEOPope who crowned Charlemagne
LEOMGM roarer since 1989
LEOAugust sign
LEODurocher
LEOFire sign
LEOName of 13 popes
LEOPope from 440 to 461
LEOKottke of blues fame
LEOWriter Buscaglia
LEOSummer baby
LEOLate-July baby
LEOAstral lion
LEOGorcey of "The Bowery Boys"
LEOAugust baby
LEOBaseball's Durocher
LEOFifth sign of the zodiac
LEOLate July baby
LEOSign of summer
LEOVirgo preceder
LEOWhere Regulus is
LEOA sign of summer
LEOFifth zodiac sign
LEOActor Gorcey
LEOInspirational Buscaglia
LEOMGM lion
LEOName of thirteen popes
LEOSign of the Zodiac
LEOZodiac sign
LEOGuitarist Kottke
LEOPerson with an August beginning?
LEOVirgo's neighbor