Grapply

Appearance
Grapply is, despite their bizarre appearance, a grappling hook. They appear to be a claw on a chain, which is wielded from a cube-shaped handle.

Personality
Although they have a mischievous nature, Grapply never does anything directly harmful. They seem to enjoy stimulating activities. Grapply likes to pretend that they're an evildoer, but is typically very friendly towards others, and likes to do more good than bad.

Abilities
Using their head, Grapply can cling to walls and ceilings and remain there for hours.

Origin
The Grappling Hook in Terraria comes in dozens of different forms. Grapply is based on the most basic one. The default grappling hook allows the player to cling to walls and climb them efficiently. Some of the other variants of the grappling hook feature multiple hooks that can all be cast at once.

Trivia

 * Despite her base object being a metallic device, Grapply is not a mechanical mind. She is the only character who is like this.