This question is incomplete. It requires more information to provide a specific answer. To understand which Devil Fruit you're asking about, please provide more context. For example:
- What are the powers of the Devil Fruit?
- Who is the user of the Devil Fruit?
- What is the Devil Fruit's appearance?
Once you provide more details, I can tell you which Devil Fruit you're thinking of.
For example, if you told me the Devil Fruit grants the user the power to control fire, I could tell you it's the Mera Mera no Mi, also known as the Flame-Flame Fruit.
Let me know more about the Devil Fruit you're interested in, and I'll be happy to help!