Answer
Elagabalus succeeded Caracalla as Roman emperor in 218. Caracalla had been assassinated by his praetorian prefect Macrinus, who then declared himself emperor. Elagabalus was a young man from Syria, and he brought many of his Syrian customs and religious practices to Rome. He was also known for his extravagant lifestyle and his sexual promiscuity. He was eventually assassinated by his own praetorian prefect in 222.