Answer
Geta became Co-Consul in 203 AD, alongside his father Septimius Severus, who continued to rule jointly with his elder son Caracalla. This arrangement was an attempt to secure a smooth transition of power and ensure the stability of the Roman Empire. Geta's tenure as Co-Consul was short-lived, however, as he fell victim to a political intrigue and was assassinated by his brother Caracalla in the same year.