Rush was ten months old when he first appeared in a local television special, and then several ads and catalogs shortly thereafter. By age 2½, he had the uncanny ability to identify cars by logo and body style, and was soon featured on the KHOU morning news in a segment on how to raise "smart kids."
Before working on Heroes, Rush appeared on Private Practice. His film credits include Blue Boy, The Journal, and Mindsight, and he played Carlos in the Baby Jamz: Daily Lessons and Jamz Sessions children's video with Solange Knowles. He has also acted in commercials for Space Center Houston and Safeco Insurance, and a video e-card for AmericanGreetings.com. In 2009, Rush appeared on The Jay Leno Show as the "Super Duper Nanny Son." The same year he also appeared on Medium as Tanner Campbel and on Criminal Minds as Ronny Downey.
Rush's first major television role came in 2009 when he was cast on Heroes, where He played Zachary Quinto's character Gabriel Gray at a young age. After Heroes, Rush had minor roles on Parenthood, CSI: NY, and Special Agent Oso.
In 2010, Rush began portraying a young version of Zachary Levi's character Chuck Bartowski on Chuck. In this role, he worked with such actors as Scott Bakula and Linda Hamilton. Following his work on Chuck, Rush did ADR work on the Hallmark Channel movie "November Christmas", and commercials for McDonald's and GameStop.
In 2012, Rush appeared as Turner Simmons in the feature film Parental Guidance, which earned him a Young Artist Award nomination as Best Supporting Young Actor Ten and Under in a Feature Film.
|Star vs. the Forces of Evil Staff|