I'm pretty sure that Codename: Kids Next Door was my second fandom, mayyybe third. I don't even think I was thirteen yet when I started watching it, but I absolutely fell in love with the forums. I wasn't into slash yet, but it started off a lot of the preferences I would have for shipping, and really taught me the ropes of how this whole "don't be a dick on the internet" thing works.
I know it was a pretty polarising show, but the things that really got me into it were the constant shout-outs, the whimsical animation, and the characters. The characters were great. They were deceptively simple, but underneath, you really got the feeling that