|Yuya Sakaki (owner)|
|Anime debut||Yu-Gi-Oh! ARC-V episode 5: "Toying Around: Part 1"|
En appears to be a Pembroke Welsh Corgi.
En's name along with Core's forms the word "encore".
Pre Arc League Championship
After waking up from a dream, Yuya exited his bedroom to be greeted by En and Core. Yuya picked En up and reminisced about when En was a puppy, also noting that he had gotten larger and much heavier since he was a puppy.
- Yu-Gi-Oh! ARC-V episode 5: "Toying Around: Part 1"