Summary
- Luffy's scar beneath his left eye was self-inflicted as a way to prove himself and look tough to Shanks' crew.
- The X-shaped scar on Luffy's chest was caused by Admiral Akainu during the Marineford War arc and was a result of Jinbe protecting Luffy.
- Although the anime has a filler arc that gives Luffy a similar chest scar, it is not considered canon, and the true origin is from the manga version.