| Birth Name | Zhang Jiashuai, his legalized name is Zhang Yixing (张艺兴) |
| Stage Name | Lay (레이) |
| Birthday | October 7, 1991 |
| Nationality | Chinese |
| Height | 176 cm |
| Weight | 60 kg |
| Blood Type | AB |
| MBTI | INFP |
| Group | EXO |
| Company | SM Entertainment |
| Position | Main Dancer, Sub-Vocalist, Sub-Rapper |
| Zodiac Sign | Libra |
| Chinese Zodiac Sign | Goat |
| Super Power Badge | Healing (Unicorn) |
| Representative Number | 10 |
| Representative Emoji | 🐑 |