The actress said she hates how new character Evelyn Plummer dresses and gets “depressed” at the sight of her.
She also admitted there “isn’t much comedy” in her storylines.
But Maureen, 72, vowed to stamp her “own personality” on the role in a bid to encourage the soap’s writers to lighten up after recent dark plots.
She said: “She is a genuine battleaxe without a man to battle.
“She is a genuine battleaxe without a man to battle”
“A battleaxe is something that the British public seem to like.
“There isn’t much comedy in the actual storyline by the very nature of what it is.
“But the lines are dry and in a way you have to put your own personality into it, and the writers start to respond to the way it is going so I can only wait and see.”
Maureen revealed she was headhunted for the role by former producer Kate Oates who was criticised for making the soap darker.
She was at first reluctant to leave her family in London to film in Manchester – until the spirit of her late husband Jack Rosenthal stepped in.
The playwright penned 129 early episodes of the soap and the couple met in the city.
Maureen said: “I didn’t know what to do.
“But the light over my late husband Jack’s picture sometimes comes on for no reason and whilst I was sitting there wondering what to do, of course on it came.”
She admitted she was attracted to the role because Evelyn is “not frightened to say what she thinks”, “certainly outspoken”, a “bit mean” and a “bit embittered”.
“I’m not saying that I am that but maybe it’s not much of a stretch,” she said.
Fans queued up on social media to welcome the veteran comedy actress.
One wrote: “At last – someone to brighten up Corrie.”