April O'Neil is the deuteragonist of Teenage Mutant Ninja Turtles. She is almost always depicted as the first human ally of the Ninja Turtles and is thus their connection to the outside world. When the turtles are ready to give up, April volunteers to find out Shredder's plot. She is also somewhat reckless, too. She cares about her family, or what's left of it, above all else. Any threat to her father is one that she takes very seriously, and when she finds out that the Turtles are accidentally responsible for his mutation, she becomes enraged and severs her ties with them. However, when she is once again assaulted by Karai, she calls Donatello for help. After he and the others save her, they reconcile.