Love/Hate star Peter Coonan is "virtually unrecognisable" as David Drumm in TV3's new movie.
Filming has already ended on what should prove a controversial film about the collapse of the Irish banking system.
As revealed in these leaked shots form the set, 'Fran the Man' has undergone a massive transformation for the meaty role.
"Everyone knows him from Love/Hate but this new role shows the massive range that he has," a source said.
"His hair's slicked back, he's wearing glasses and he's got a completely different accent. It's uncanny how much he looks like a younger David Drumm."
"It proves that he can take on any role and make it his own. He's going to impress a lot of people."
TV3 used their new high-tech HD studio to film the movie, which started on July 21 and wrapped in under 10 days.
The flick profiles the events leading up to the bank guarantee of September 29, 2008 when the fateful decision was made to bail out Ireland's financial institutions.
Set in 2004, it delves into the heady times of the Celtic Tiger and then the gradual collapse of the Irish economy.
At the heart of the drama are the figures of the Taoiseach, the Minister for Finance, officials in the Central Bank, the Department of Finance and the heads of banks.
Actor Gary Lydon will play the part of Brian Cowen while David Murray takes on the role of Brian Lenihan.
And Peter has paid tribute to those behind-the-scenes who worked hard to transform him into Drumm.
"Makeup did a really great job especially with the glasses.
"It will be really interesting to see when it comes out how it is received, whether people like it or not," he said.
His co-star Lydon joked to Pat Kenny how he "plays someone you might not have heard of - Brian Cowen".
"It was great to play the Taoiseach for a while. I was enjoying the feeling of power, it was nice to have people being reverential to you."
The Guarantee will air in cinemas in October and screened by TV3 in November.