Historical clue formulations

• IG-11 on "The Mandalorian," e.g. — 2021-01-30
• R2-D2 or C-3PO — 2020-02-02
• iPhone rival — 2018-07-12
• iPhone rival — 2017-01-07
• Priest of ancient Gaul — 2014-09-11
• Motorola phone — 2013-10-20
• R2-D2, for one — 2010-08-30
• Creation that's almost human — 2010-01-25
• Intelligent bot — 2009-01-25
• C-3PO, for one — 2007-02-26
• Sci-fi figure — 2007-01-04
• C-3PO, e.g., for short — 2005-08-30
• R2-D2 or C-3PO — 2001-02-27
• Sci-fi extra — 1999-06-27
• Servant of the future? — 1995-08-04
• R2D2, for one — 1995-07-30