: a person who claims or pretends to have certain beliefs about what is right but who behaves in a way that disagrees with those beliefs
: a person who acts in contradiction to his or her stated beliefs or feelings
1. the hypocrites who criticize other people for not voting but who don't always vote themselves
Basically a hypocrite is someone who says something is wrong, does it themselves, but tells people they shouldn't do it. You are pairing characters, messing with canon yourself, with your own original characters and yelling at ColorSplashArts because she does the same thing.
Original characters (OCs) are the same exact thing as "people who they would never actually meet" because all characters are an OC to someone.
The canon characters of Yu-Gi-Oh! will never meet your characters purely because they aren't in that universe. Have you ever seen your character in an episode with Yugi or Yami? No. Have you ever seen them in the show at all? No.
So your argument falls short. Seeing as original characters and AUs are basically the same exact thing.
Original characters will never actually meet the canon characters (Yami/Yugi/Joey)
Alternate Universe characters will never actually meet the canon characters (Danny/Jack Frost/etc)
Therefore you are a hypocrite and they are basically the same thing.