For   10   points,   identify   this   Roman   Emperor,   the   subject   of   a   Robert   Graves   novel.
After   Mercury   suggests   killing   this   man,   he   convinces   Hercules   to   allow   him   to   defend himself,   before   his   predecessor   suggests   allowing   him   to   be   a   law   clerk.   In   one   work,   this   leader   is given   an   "Olympian   Mixture"   when   he   learns   of   his   wife's    (+)    treachery   and   has   her co-conspirator   Gaius   Silius   executed.   In   that   work,   this   leader   agrees   to   step   to   the   throne   in   the hopes   that   more   people   will   read   his   histories   of   the   Etruscans.   Jean   Racine   wrote   a   play   in   which this   man's   successor   vies   for   power   out   of   love   for   this   man's   son's   fiancee   Junia.   This   man,   whom (*)    Seneca   mocked   in   his   play   about   the   "Pumpkinification   of   him",   executes   Cassius   Chaerea,   the   man who   murdered   his   predecessor   in   a   work   in   which   he   cowers   in   fear   when   the   Praetorian   guard   kills Caligula.   For   10   points,   identify   this   Roman   Emperor,   the   subject   of   a   Robert   Graves   novel.
After   Mercury   suggests   killing   this   man,   he   convinces   Hercules   to   allow   him   to   defend himself,   before   his   predecessor   suggests   allowing   him   to   be   a   law   clerk.   
Tiberius    Claudius    Caesar   Augustus   Germanicus