Who was the Roman Emperor stabbed by Brutus?

The Roman Emperor stabbed by Brutus was Julius Caesar. Although he was not an emperor in the traditional sense since the title was not used until after his death, he held the position of dictator perpetuo (dictator in perpetuity). Caesar was assassinated on March 15, 44 BC, during the Ides of March by a group of senators, including Brutus, who feared his accumulation of power. His assassination marked a significant turning point in Roman history, leading to the rise of the Roman Empire.