Answer:

OTTO

AnswerCrossword Clue
OTTO"Beetle Bailey" pooch
OTTOAeronautical pioneer Lilienthal
OTTOGraham of the gridiron
OTTOPalindromic German king
OTTOPalindromic pooch
OTTOSgt. Snorkel's sidekick
OTTOConductor Klemperer
OTTODirector Preminger
OTTOFootball Hall of Famer Jim
OTTOOne of the Ringling Brothers
OTTOPalindromic chancellor
OTTOFirst king of the Hellenes
OTTOGraham or Preminger
OTTOPalindromic ruler
OTTOPapal name
OTTOPreminger of "Laura"
OTTOGridiron great Graham
OTTOPalindromic name
OTTOInflatable pilot in "Airplane!"
OTTOName of the world's oldest dog (20 years, 8 months)
OTTOComics bulldog
OTTO... von Bismarck
OTTOGridder Graham
OTTOAnne Frank's father
OTTOActor Kruger
OTTOPreminger of pictures
OTTOSergeant Snorkel's dog
OTTOPrussia's Bismarck
OTTOKruger or Klemperer
OTTOPalindromic handle
OTTOItalian eight
OTTOSette + uno
OTTOMaestro Klemperer
OTTOSpider-Man foe Doc Ock
OTTOEight, in Italy
OTTO.. von Bismarck
OTTOActress Miranda
OTTOBart and Lisa's bus driver
OTTOMilanese eight
OTTOEight on Mount Vesuvius