Batman's partner is ROBIN, a five-letter word. ROBIN is a superhero sidekick to Batman and has been featured in many comic books, television shows, and movies. He is often portrayed as a young boy or teenager who assists Batman in his fight against crime. ROBIN is known for his acrobatic skills and his ability to use a variety of gadgets. He is also known for his loyalty to Batman and his willingness to put himself in danger to help protect Gotham City.