Machine Spear is a Spear in NieR: Automata.
"A spear used by machine lifeforms." 
- "A spear used by machine lifeforms, specially formed from scrap metal to destroy androids."
- Sold by Machine Village Weapon Shop for 15,000G
- Level 1
- "My name is Plato 1728. I am a failure of a machine. I was designed for combat, but I can't use weapons. Everyone makes fun of me, and my life is horrible."
- Level 2
- "I am a dumb machine. I got lost during battle, and ended up in some kind of factory. I found a whole pile of dolls discarded there. They share the same fate I do."
- Level 3
- "I am a foolish machine. Today, I had to fight at that factory. All of the dolls got completely destroyed. Crushed by my friends and foes, who can do nothing but fight fight fight."
- Level 4
- "I activated my cannon and shot everyone there. I'm not sure why I did that. All I know is I decided to fight. Because I'm just a stupid, broken machine."