In the episode "Movies" Alex wants to hang out with some of Justin's new older friends. She meets one his friends named Zach Rosinblack. Now fast forward to some more current episodes and you'll see he's Zeke Beeckerman, Justin's best friend who's the SAME age. To a minor character that's okay, but he's now a very recurring actor and to change his name and age is a big No-No on Disney's half.