From Teenage Mutant Ninja Turtles wiki
April O'Neil
April O'Neil is a resourceful human ally to the Teenage Mutant Ninja Turtles who frequently assists them in their battles against the Foot Clan and other threats in New York City.
Role and Origins
April O'Neil is a vital human companion to the Teenage Mutant Ninja Turtles, often serving as the bridge between the turtles and the surface world. While her background has shifted across various iterations, she is most commonly depicted as a skilled investigative reporter or a laboratory assistant. Her technical expertise and ability to navigate human society allow her to gather intelligence that the turtles, led by Leonardo, Donatello, Raphael, and Michelangelo, cannot easily obtain from their base in the sewers.
Relationships and Conflict
April maintains a close bond with the turtles and their mentor, Splinter. She is frequently targeted by the turtles' primary antagonist, Shredder, and his associates, including the extraterrestrial warlord Krang, due to her proximity to the turtles and her access to sensitive information. Despite the danger, she remains a courageous figure who often puts herself in harm's way to aid her mutant friends in protecting New York City from criminal and science-fiction threats.