Dude, Not Funny!: Apparently Lex finds a great deal of humour in informing Superman that his homeworld is gone and that he is all that's left of his people. He even takes a picture of his face so he can capture the moment.
Older Than They Think: The idea of Lex and Clark being friends in their childhoods has been around much longer than the TV series Smallville but new readers might believe this is a Canon Immigrant. However, Lex's dad on the other hand does resemble Lionel Luthor from the series.