- Both are part of NCT 127.
- Both were SM Rookies.
- They are the oldest members of the group.
- Johnny was born in 1995 but Taeil was born in 1994.
- Johnny was born in USA and Taeil in South Korea.
- Taeil is a Gemini and Johnny is an Aquarius.
- Taeil debuted in NCT 127 before Johnny.
- They are part of the South Korean boy group NCT .
| To view the JohnIl gallery, click here.