Well, so we have 4 major characters. All people who I found on Pinterest so I may not have the names of some.

Yung Dari (I found her!) playing Lacey Holder.

This guy is playing Connor Clifton. I don't know who he is so if someone knows, let me know. I imagine Connor having longer hair though, like just a few inches longer. 

This guy is playing Harry Desmond. I also don't know who he is so if someone knows, let me know. I picture Harry similar to this but also different. He has more auburn coloured hair. 

Moon Su Inn playing James Cai. I found him on Instagram and turns out he's an actual basketball player! Just like James. (Hmmm James, Jem....hmmm)

This is how I imagine the characters to look, it's not exactly how I picture them though. So feel free to think of their appearance however you like. :)