In the summer of 2001, Shriner joined
Weezer on a provisional basis. In his first show with Weezer, the 2001
KROQ-FM Inland Invasion, he was attacked by a man later found out to be a friend of his, yet continued to play on as security guards pried the man off his back. Shriner became Weezer's third bassist, and the longest-running bassist in Weezer history; he has appeared on twelve of Weezer's fifteen studio albums. On
Weezer's third self-titled album, he co-wrote and sang lead vocals on "Cold Dark World," sang lead vocals on "King" (a deluxe edition track), and sang most of the lead vocals for the band's covers of "
The Weight" by
the Band and "Oddfellows Local 151" by
R.E.M. in
Bethlehem,
Pennsylvania on August 5, 2019. In 2005, he sang lead vocals on Weezer songs "
In the Garage," "
Dope Nose," and "Fall Together." In 2008, during the band's
Hootenanny Tour, he sang lead vocals on a cover of "
Creep" by
Radiohead. On the band's 2008 Troublemaker Tour, he sang "
Perfect Situation" and "
My Name is Jonas", which he sings in a three-way lead vocal second, with
Patrick Wilson and
Rivers Cuomo singing lead vocals first and last respectively. He also played on the band's EP
The Lion and the Witch and numerous B-sides and demos which can be found on the internet. He has also played shows with Patrick Wilson's band
The Special Goodness. On April 11, 2018, several days prior to
the Cars' performance at their
Rock and Roll Hall of Fame induction on April 14, Shriner announced that he would perform with the band. Shriner had previously worked with the Cars leader
Ric Ocasek when Ocasek produced the 2014 Weezer album
Everything Will Be Alright in the End. In 2020, Shriner voiced himself in
The Simpsons episode "
The Hateful Eight-Year-Olds", along with the rest of Weezer. == Side projects ==