In the final moments of last Friday's Smallville titled Episode 10.13: Beacon, it was revealed that Lex Luther clone Alexander is actually Conner Kent, aka Superboy. Superboy will appear in his full costume sometime during Episode 10.16: Scion. We have your first look at Lucas Gabreel as Superboy in the photo below:
About the character of Conner Kent, showrunner Brian Wayne Peterson made the following statement.
"Conner's journey is manipulated by a master. Luckily, someone knows more about Conner's life than he does. But he should be wary of strangers bearing gifts."