Bowman, who was cast in the role last June, described the college student as a "psychopath".
She told PA: "I enjoy playing her because she's a bitch and I'm not going to lie, it's quite fun to play a bitch.
"She thinks people are always judging her when really they're not and she doesn't want people thinking bad things about her, which they don't.
"So she just makes the situation worse because she's a psycho."
However, the actress insisted that she is nothing like her alter ego, revealing that some fans have believed otherwise.
"I'm not like Maddie, definitely not," Bowman added. "Maddie is a psychopath - she's crazy, she's an absolute nightmare!
"People think I am like her though, which is really quite offensive. I'm nothing like Maddie, I'm Scarlett."
> Hollyoaks Scarlett Bowman: 'Callum is really good for Maddie'
> Hollyoaks Scarlett Bowman interview with Digital Spy