Here we have the mary-sue's sister! She may not be as bad but doesn't mean I can't rant about her. So first she was jealous of her sister and starts to train in the Dark Forest.

 After that she is kinda a jerk to Dovewing just because of her jealousy! So after she tells the 'power of three' about the prophecy she becomes a spy! 

She betrays the Dark Forest which I found kinda awful she tells all the information about what there planning and such. Ivypool is trained by Hawkfrost, you guessed... Tigerstar's son. 

Another decent of Tigerstar training a decent of Firestar because what book would be complete with out it? Oh yah! All of them!

 Okay I couldn't think of anything else.