The actor, who has been appearing as Brendan for nearly two years, suggested that the bad boy would lose his appeal if he decided to change his ways.
Scanlan told PA: "I don't think there's much interest in Brendan walking down the street, going into Price Slice and buying himself a packet of Jaffa Cakes.
"He's not that normal nine to five kind of guy. He's always got this darkness to his character and that's what makes him interesting."
Scanlan also reiterated his belief that Brendan is in love with on-off boyfriend Ste Hay, played by Kieron Richardson.
He said: "Everything's a game to Brendan. Everything has an element of power, control and possession. No-one plays with Brendan's toys except Brendan himself. That's not to say it isn't love, of course it's love but it's a different kind of love to anybody else's.
"He'll do whatever it takes to get possession of Steven and to be with him. I don't know how that would work, for the relationship to blossom if they were publicly just going out with each other. But nobody gets in Brendan's way."
Hollyoaks fans see Ste, Brendan and Doug's love triangle come to a head later this week.