Even though everyone comments on how much Lucas looks like Kevin, and yes, they do look a lot alike, he is still very much 1/2 Korean.
How do I know? Here are a couple proof points:
1) He still eats, by the spoonful, these little dried anchovies, which my mom buys for him at the Korean grocery store.2) Lucas loves all other Korean food too. He will even drink the watery remains left at the bottom of a bowl of kimchi.
3) Lucas came out to the backyard today like this. Need I say more?