NPCs are characters that are added to a level to make it more challenging or simply more beautiful. NPCs can range from power-ups, bosses, and simple enemies, and rideable and talkative beings.
“Hammer Bro. is a recurring enemy found in the Mario series, known for it's annoyance: throwing...Hammer Bro.
“For the hammers thrown by the Hammer Suit power-up, see Hammer Suit. Hammers are NPCs thrown by...Hammer