Erica Durance came onto Smallville for Season Four. Since then, she has appeared in thirteen episodes of every season ever since. The actress is sometimes credited as Erica Parker, she has appeared in episodes of Andromeda and The Chris Isaak Show. She was also in the movie House Of The Dead.

And a quote from Erica herself:

"Of all the different female leads in comics, Lois Lane was always my favorite because she was so involved. She was always so involved in everything going on - she's a go-getter, she was really in there, quite tough and kind of a hero in her own right."