Just had something really odd happen. Had a Star Kid with Torri, didn't see any special notifications. However a huge list of class options opened up. Apparently this kid has a level cap of 99 and gets a special yellow star symbol under him inside of the dungeons.
...what just happened? o.O
There is supposedly a 5% of getting a "genius" kid whenever you have a star kid. In addition to having a level 99 cap no matter, they also have the benefit of getting something like 50% stat bonus n creation (hence why so many more classes were available because you met their stat requirements). I think I have made somewhere in the neighborhood of 50-60 star kids and I've currently gotten a grand total of 3.