Todd Grimshaw's return to the cobbles of Weatherfield will see him "wreak havoc".
The gay lawyer sets his sights on Marcus Dent (Charlie Condou) and won't let his girlfriend Maria Connor (Samia Ghadie) get in the way of what he wants as Bruno Langley - who is reprising his role as Todd - says his character has completely changed.
He explained: "Todd has his eye on Marcus and he's out to get what he wants.
"He likes a challenge and I guess he's probably one of those people who likes the drama of splitting couples up.
"It's all for his own ego and just to prove that he can.
"People know Todd as a nice guy but he must have been hurt in some way in a past relationship and that's why he is like he is now.
"Todd's come back to wreak a bit of havoc."
And Todd also plans to string along Marcus' ex-lover Sean Tully (Anthony Cotton), who lives with his mum Eileen Grimshaw (Sue Cleaver).
Bruno added to RadioTimes.com: "Todd can be very charming when he wants to be and has a way of being able to get people on his side. He's very clever and can turn things around so that the other person thinks it's their fault.
"He's quick on his feet with his answers and he knows that Sean fancies him, so he uses that against him.
And it will be Sean that Todd uses to persuade his mum to let him stay -- and cause trouble.
"He manipulates Sean. Nice Todd has well and truly gone."
However, one person who Todd can't win over is his brother Jason (Ryan Thomas).
Bruno said: "Jason has his doubts about Todd's intentions.
"Jason's questioning why Todd is staying around and why he's acting so horribly. He's always had a problem with Todd being the golden boy, but I think that could all change. The tables have turned... "
Tagged in Ryan Thomas Charlie Condou Samia Ghadie