Later this week, viewers will be introduced to Banks's character Alice - who is the daughter of Walford villain Derek Branning.
However, show bosses are also planning to bring in Alice's sibling Joey, who was recently mentioned on screen as Derek tried to reconcile with him.
Banks told Inside Soap: "I can't wait for them to bring in Joey. It'll be so exciting. There are so many places they can take them all."
The actress also praised Jamie Foreman, who took over the role of Derek late last year.
She said: "Jamie has made it his mission to look after me. On my very first day here, there was a big cast meeting and every single actor was there.
"I was both terrified and star-struck, but Jamie sat next to me and made sure that I was okay. I've already learned so much from him - he's amazing."
Alice's first scenes air this Thursday (May 10) at 7.30pm on BBC One.