Monolith

Monolith (石頭) is one of Lexaeus's weapons in Kingdom Hearts 358/2 Days. It is a moai.

Design
The Monolith is seemingly made entirely out of grey rock. Its “blade” takes the form of a moai in profile, while its counterweight is a flat section of rock that juts out from the back of the moai’s head.

It is also notable that since the description for "Mystery Gear" states that it brings out the user's personality, this may be a reference to the fact Lexeaus tends to be "stone-faced".