New Smallville star Sam Witwer aka Davis Bloom (Doomsday) talked about starring on Smallville with website E online. In his interview he mentioned Allison.

Have you worked with any of the regulars yet?
I worked with Allison Mack yesterday, and she’s a sweetheart. She’s sort of my contact person into the world of the characters and the story. As for how he relates to all the other characters, that remains to be seen.

You can check out the whole interview with Sam witwer over at E Online
WARNING! interview contains spoilers for season 8!