As a teen, Wentz eventually began cutting his teeth in various punk and hardcore bands throughout the local scene, often playing in multiple groups simultaneously and making a name for himself amid Chicago punk circles. He most notably served time in the '90s playing with metalcore acts Racetraitor and Arma Angelus, serving as the growling lead vocalist for the latter, through which he met guitarist and future Fall Out Boy bandmate Joe Trohman. Trohman approached Wentz about starting up a poppier punk group together, and Fall Out Boy was thus born in 2001; Wentz subsequently left Arma Angelus to concentrate on the new band full-time. Fall Out Boy steadily built up a loyal grassroots following across the country (Wentz especially spent a lot of time communicating directly and building kinships with fans) before exploding into the mainstream consciousness with their 2005 album, From Under the Cork Tree. During work on the album, pressure and stress started greatly affecting him; he began isolating himself and ultimately overdosed on anxiety medication in early 2005, leading to a weeklong hospital stay. He recovered, and as Fall Out Boy's celebrity rose -- thrusting emo and pop-punk onto radio and MTV airwaves alongside New Jersey peers My Chemical Romance -- so did Wentz's, and he essentially became the face (and mouth) of Fall Out Boy and an entire scene.
Wentz (eyeliner, tight jeans and all) suddenly became a person of interest to gossip columns and tabloids; they especially fed off one particular incident in early 2006 where naked photos taken of him on his cell phone leaked online. The paparazzi also enjoyed documenting his later romance with pop singer Ashlee Simpson. More than just a musician -- and much like his idol Jay-Z -- Wentz got involved in a variety of projects aside from Fall Out Boy, including acting as the head of his vanity label Decaydance (an imprint of Fueled by Ramen Records), where his A&R work led to the signing of the widely successful Panic! at the Disco, among others. Wentz further started a clothing company/book distributor called Clandestine Industries, and wrote a graphic novel entitled The Boy with the Thorn in His Side, which was inspired by the chronic insomnia and nightmares he'd had as a kid. In the summer of 2007, Wentz opened a bar with some of his musical colleagues and friends (including members of the Academy Is... and Gym Class Heroes) in New York City's East Village called Angels and Kings. ~ Corey Apar, Rovi