|Nom de guerre||Carbon Dog|
|Vulnerable to||PSI Freeze|
- "I am the guardian of Fire Spring. So you've gotten this far have you? You must have a lot of guts to make it this far. Shame it all has to end right here."
- — Carbon Dog
The Carbon Dog is the first form of the eighth and final Sanctuary Guardian of EarthBound. It is weak to PSI Freeze. After it is defeated, it emits a rainbow of colors and becomes the Diamond Dog. You can essentially skip the entire carbon dog phase by using PSI Flash. It is the only Sanctuary Guardian with two forms and its overworld spirte shines a bit brighter than those of the others.
The Carbon Dog's name and transformation refers to the fact that carbon turns into diamond when exposed to extreme heat and pressure.