The 78-year-old appears on the ITV soap from next week, taking on the role of elderly businessman Eric.
Eric is smitten with Gloria when he first arrives in Weatherfield, but he soon realises that she is only interested in his money.
Moving on quickly, Eric then turns his attentions to Gloria's granddaughter Eva, asking her to travel the world with him.
West told itv.com: "He meets Eva and the rest of the family, they have all made him very welcome, but he is drawn to Eva as he realises that she is unhappy and he thinks she is a lost soul like he has been in his life.
"He doesn't want to have a sexual relationship with her at all, he is far too old for one thing. But he does think that they might have some fun together seeing the world. She is funny and intelligent.
"He sees vulnerability in her that others don't, he doesn't really see the harder side of her. He is quite good at judging people and he sees something underneath it all. She is having a hard time with the family over the Leanne situation, and it helps that she is very beautiful."
Asked whether Eric is annoyed over Gloria's behaviour, he replied: "He has always seen that there is a definite selfish, slightly grabby, element to her, but it gets worse and he doesn't like that. He doesn't like the constant family rows she causes. He likes a quiet life, and he feels Eva offers a more appealing alternative."
West also explained that Eric is a guest role, confirming that the character won't be sticking around on the Street for long.
He said: "It did appeal to me that this was a story with a definite end to it, and I couldn't have stayed long term, but I have enjoyed it immensely."
Coronation Street airs Eric's first scenes on Monday, February 18 at 7.30pm on ITV.
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