|Full Name||Leo Francis Dooley|
|Love Interests|| Danielle
|Family|| Chase (step-brother)|
|Portrayed by||Tyrel Jackson Williams|
|First appearance||Crush, Chop, and Burn|
Leo Dooley is the lead character in Lab Rats. He's portrayed by Tyrel Jackson Williams.
Leo is a normal teenager who finds the bionic trio in his new dad's mansion. Leo is not popular at school, and he only wishes to be a great inventor like his dad and be popular.
He is Leo's step-father. He created the bionic trio and owns the house that Leo moves into.Donald is also a inventor of multiple bionic things.
She is Leo's mother.
- Leo says that his middle name is Danger, even though it's really Francis.
- Leo is a very good dancer.
- He has a crush on a girl named Danielle.