He's Confident and Competent, he's a male plane that is the brother (And predecessor) to the 737 MAX, he's a 10 year old narrowbody who usually flies short and medium haul flights, he's eqquiped with two cfm-56 engines which are flat on the bottom because the 737 stands so stubby, he competes directly with the A320ceo and he was discontinued in 2019, but he still is the most widely used narrowbody ever in service, every second,  one 737 NG takes off or lands, being surpassed only by the a320ceo