|Hometown:||Temple City, CA|
|High School:||Temple City HS|
High School: Dennis graduated from Temple City HS in 2013. While in HS he was awarded Freshman of the Year (2009), Swimmer of the Year (2013), and Most Valuable Swimmer (2013). He received 4 varsity letters for Swimming.
Personal: He is the son of Justin and Linh Lee. He has one sibling, Rachel. During his free time he enjoys playing violin, Ultimate Frisbee, and Chilling with Friends.