Turning off Mage pet luclin models

[Trelaboon]

Okay, so i'm sorry if there's already a related thread, but I did a search and only found one thread that didn't fix the problem. My brother just started playing, and my pets always looked like the original, but for some reason his look like the Luclin pets. I want him to experience this game the way I did when I was his age (He's still a teenager) and I hate the Luclin models. I tried turning them off in options but they still look the same. How do we disable the new luclin models for pets? Thanks in advance.