I don’t think Marius ever got to Rome during his brief reign.
Marius was never a king or emperor as we know the term. Instead he was a successful general and politician who was elected to seven consulships which put him at the head of the Roman republic along with a fellow consul.
He was perhaps the most notable leader of Roman political life during the last days of the Republic.
He was in and out of Rome all the time between campaigns so I don’t understand your comment unless you are confusing him with someone else.