Answer:
The answer is the Consul.
Step-by-step explanation:
In the Roman Republic, there were two consuls elected. These acted similarly to the president. Both the president and the consul were separate branches of government. These two consuls worked together to get things done and were similar to the president. Some ways were the fact that they were separate from the legislative branch, and then naturally they acted similarly to the president when laws needed to be put in place.