- Name: Caelan Moriarty (モリアティー慶怜)
- Nickname: Caelan (ケーレン)
- Birthdate: April 12, 2001
- Birthplace: Cuba
- Blood Type: O
- Height: 172cm
- Education: Nile C. Kinnick High School (Graduate)
Caelan was born on a military base in Cuba on April 12, 2001. Since his Irish-American father works in the military, as a child he moved around quite a bit experiencing different cultures. Growing up, he's lived in Virginia Beach, Hawaii, Spain, and Japan.
As the youngest of the group, Caelan is the "mood maker," always making everyone laugh. Since he grew up exposed to so many different cultures, he has a very varied taste in both music and interests.