Zachary Steven Merrick is a founding member of All Time Low in 2003, serving as the bassist and backing vocalist. He helped All Time Low release two consecutive No.1 U.S. Alternative albums: Dirty Work and Nothing Personal. Moreover, together with his bandmates, he produced an amazing album "Don't Panic" in 2012, which reached No. 1 on the Top Internet Albums chart, No. 9 in the UK and in the top 20 in Australia and Canada.
He stared playing bass at the age of eleven.His brother also had a career as a musician.While still in high school, Zack Merrick was recruited into the band All Time Low in 2003 by bandmates Alex Gaskarth-Lead ,Jack Barakat-guitar along with drummer Rian Dawson.
His favorite cartoon is Scooby Doo.
In 2014, he was dating a woman named Regina Fazio.