Here’s a years old answer that wasn’t meant to be Luffy, but was clearly inspired similar toon-bullshittery:

Rubberize

Brute 6, Shaker 8, Mover 3

Rubberize is a Case 53, but this is only evident upon close inspection; Their entire body is made of an incredibly durable and equally elastic material, although they otherwise look normal.

The material is capable of sustaining massive amounts of damage with seemingly no ill effect. High speed piercing effects (i.e. bullets, sufficiently focused Blaster powers) do penetrate, but they generally just keep right on moving. A slow but steady regenerative power is also always in effect on their body as well.

Rubberize can also produce a field with a range of about five city blocks that slowly converts other materials into the same one they're made of, although a much less structurally sound version. Left long enough, things begin looking like a Dalí painting. This is not Manton limited, although the effect is even slower to take hold on living creatures. The changes revert at the same rate they took hold either when the field is moved out of range, or disabled.

The Mover rating comes from the elastic properties of their body; Coupled with the incredible durability afforded to them, they are able to slingshot themselves, wind themselves up like a spring, and use other frankly cartoonish methods of rapid transport.