Tennis ball is a He/Him. He is a sentient tennis ball from BFDI with a face. He has no arms but uses his legs as arms. He is Golf Ball's best friend. He is very smart and often makes inventions.  He usually calls himself "I, Inventor Tennis Ball," and some words about himself after that. He often dies but there is a Hand Powered Recovery Center. The Hand-Powered Recovery Center (HPRC) is a big box like tool that bring people back to life. It has a keyboard and a text slot in it. 