Glace

She used to be the princess of her own pride and had a lovely friend and a sister whom she loved dearly. Another female lion, who Glace considered her most trusted friend, secretly hated Glace (for being the pride leader and all that and blah blah he was also probably jealous since Glace got all the males). So the rival lioness dudette who has no name yet, goes behind Glace's back and brings together a bunch of rogue lion females (to be her partners in crime and sh*t). So one dark day the rival lion and her goofs attacks Glace's pride and kills all of them, and just to make stuff worse, the rival lion kills Glace's sister, in front of her. Just to let the whole "I hate you Glace" thing sink in. The evil rival lion then sends his goofs on Glace and they beat him up pretty badly, and leave him to die. She escapes by the skin of her teeth, seeking revenge and acts pretty hostile around friends. Or "friends" as she thinks they are. She is not a lioness of trust any longer.