Lab Rats - Season 3 - Eps 17: Brother Battle
Chase feels that it is unfair to be picked on by Adam every time and tells Donald. Douglas overhears and unlocks a new ability for Chase, upsetting the balance in the house. Douglas tries to fix things by giving Adam a new ability as well, but Adam and Chase end up fighting with one another. Meanwhile, Bree tells Leo about a contest at Tech Town as they are about to hit their one-millionth customer and Leo competes to ride on the first anti-gravity roller coaster and meet the owner of Tech Town. Principal Perry tries to compete to crush Leo's dream. In the end, Chase and Adam have a death battle, but eventually forgive each other and find out that Douglas gave Bree the ability to go invisible, scaring everyone in the lab.
About Lab Rats

Title: Lab Rats
First Air Date: 2012-02-27
Last Air Date: 2016-02-03
Status: Ended
Rating: 8.111/10 (from 157 votes)
Language: EN
Seasons: 4
Total Episodes: 96
Network: Disney XD
Genres: Comedy, Sci-Fi & Fantasy, Kids
Production Companies: Walt Disney Television, It's a Laugh Productions
Synopsis
Leo is an ordinary teenager who has moved into a high-tech "smart'' house with his mother, inventor stepfather and Eddy, the computer that runs the house. Leo's life becomes less ordinary when, one day, he discovers a secret underground lab that houses three experiments: superhuman teenagers. The trio -- Adam, the strong one, Bree, the fast one and Chase, the smart one -- convinces Leo and his parents to let them leave their lab and join Leo at school, where they try to fit in while having to manage their unpredictable bionic strengths. As Leo figures out a way to keep his new pals' bionic abilities a secret, they help him build self-confidence.
Cast

William Brent
Chase Davenport

Spencer Boldman
Adam Davenport

Kelli Berglund
Bree Davenport

Tyrel Jackson Williams
Leo Dooley

Hal Sparks
Donald Davenport