Originally posted by ZBomber
Well, you gotta remember I didn't make the thread. I mean, sure, its pretty obious I wanna be a mod (who doesn't) But I didn't plan on being a mod of the Swamp. I really want to mod the Collecting Forum. But, I didn't think I was gonna get modded. Its not up to the members. Or the mods. Or the super mods. Its up to the admins. And I'm not gonna argue. If they don't think I should be a mod, thats OK. If they think this thread should be closed, then that fine, also. Lets just not fight here.
GASP! SOMEBODY'S USING SANITY HERE NOOOOOOOOOOOOOOO
Vader's wife was very pregnant when she died 19 years ago. All of a sudden a 19 year old who is very strong in the force and has a distinct resembalance to him in his younger days rolls in from Vader's home planet with his old Master Obi-Wan (Who was the ONLY other person preset at the time his wife died. And to boot, the kid's last name is Skywalker.
So in answer to your question, he knew Luke was his son because his name is Darth Vader, and not Darth Retard.
-Forum post on why Vader knew Luke was his son.