The phrase 'through his role' is correct and usable in written English.
You can use it whenever you want to express that something was achieved or done as a result of a specific role or position held by a person. For example: John was able to help the community through his role as mayor.
Mr. Vaughn, for his part, drifts awkwardly through his role.
And he will also control the government, through his role as the PPP's leader.
'The show' is of course Breaking Bad, which catapulted Paul into the spotlight through his role of Jesse Pinkman.
After he became well, Gilbert threw himself into the NHS through his role as chair of his local Mind group.
You particularly want it to get its fangs into Michael Madsen, sleepwalking through his role as a two-faced scientist, before its inevitable demise.
He gained more popularity through his role in a national protest march against Mr. Zardari, who did not immediately reinstate him after he became president.
Dr. Winsten's efforts on behalf of designated drivers, which began in 1988, took place through his role as director of the Harvard Alcohol Project.
Mr. Gooding trudges through his role with a poker face, exuding an air of embattled nobility that belies his deadly occupation.
But his influence has been widely felt through his role as chairman of the committee of deputies of the government's national security agencies.
He not only exerted influence over state-controlled organisations through his role as prime minister, but through his own media empire, including a major broadcaster and publishers.
Through his role with the Nonviolent Peaceforce (NP) in South Sudan Rocky helps to champion an innovative model of peacekeeping called unarmed civilian protection (UCP).
