Useful/Useless Characters/Things In Games
Useful
Ness's dad from Earthbound. He gets no screen time at all but he's such a helpful character. While Ness is out saving the world, his dad is dipositing fat sacks of money into his son's account. He'd rather have Ness and his friends stay at the fanciest hotel in town than some crappy Motel 6 or whatever the place is called. "Hi son! I want you to know that I just put $3500 into your account! Don't spend it all in 12 places. You stay save and give your mother my love!" Don't know what Ness's dad does but it must be something pretty good if he can throw that kinda money into his son's account. He's a true hero, man. Best dad in a video game. Ever.
Yamato from Shadow Dancer. He attacks enemies for you on command. Now if only he'd take a bullet or a sword slice for you....
Magnet Beam power-up in Mega Man. Because without it, you're royal screwed in the Dr. Wily stages.
Useless
Edward from Final Fantasy IV. Cecil, even if it was under the orders of a pyscho king, took the lives of innocent people, and had his love kidnapped by his best friend who betrayed him. Yet he can still go into beast mode throughout the whole game. Edward lost his girl but still sucks even after she gives him a pep talk in spirit form. To further compliment Edward's worthlessness, he comes with the coward's command called "Hide". "Guys, I'm gonna cover my own anus and hide while you guys get your's kicked. Thanks a lot, Ed. Screw you.
I'll come up with more later.