"main actor is" is a correct and usable phrase in written English.
Example: The main actor is John, who plays the lead role in the movie.
Another main actor is Maersk, which has large interests in fossil fuels.
Even the main actor is an able-bodied actor, which prevents him from knowing how accurate his acting, how harmful his portrayal, and how inauthentic the script really are.
The main actor is a little child who is torn between mother and father during a divorce.
On a paternalistic view of healthcare the main actor is the doctor or healthcare professional and the assumption is that the patient is adopting a passive 'recipient' role which absolves him of any real responsibility and, in a legal sense, means that his conduct cannot interfere with the chain of causation.
Main actor was the energy department of the City of Frankfurt.
In addition, interaction between the main actors is expected due to the systemic nature of innovation and can be a key factor for companies to adapt its activities to the given environmental conditions (Asheim and Gertler 2005; Ettlie 1983; Fagerberg 2005).
"The two main actors are just incredible".
This overlong sentence is needlessly wordy; the main actors are described four different ways.
Most of the original show's main actors are now dead.
Will the main actors be plucked from obscurity or will they be well-known?
"I remember sitting at a table right behind where the main actors were," she said.
