Question:
Avenged Sevenfold (sometimes abbreviated as A7X) is an American heavy metal band from Huntington Beach, California, formed in 1999. The band's current lineup consists of lead vocalist M. Shadows, rhythm guitarist and backing vocalist Zacky Vengeance, lead guitarist and backing vocalist Synyster Gates, bassist and backing vocalist Johnny Christ, and drummer Brooks Wackerman. Avenged Sevenfold is known for its diverse rock sound and dramatic imagery in album covers and merchandise. Avenged Sevenfold emerged with a metalcore sound on the band's debut Sounding the Seventh Trumpet and continued this sound through their second album Waking the Fallen.
In January 2009, M. Shadows confirmed that the band was writing the follow-up to their self-titled fourth album within the upcoming months. They also played at Rock on the Range, from May 16-17, 2009. On April 16, they performed a version of Guns N' Roses' "It's So Easy" onstage with Slash, at the Nokia Theater in Los Angeles. On December 28, 2009, the band's drummer James "The Rev" Sullivan was found dead at his home at the age of 28. Autopsy results were inconclusive, but on June 9, 2010, the cause of death was revealed to have been an "acute polydrug intoxication due to combined effects of Oxycodone, Oxymorphone, Diazepam/Nordiazepam and ethanol". In a statement by the band, they expressed their grief over the death of The Rev and later posted a message from Sullivan's family which expressed their gratitude to his fans for their support. The band members admitted in a number of interviews that they considered disbanding at this point in time. However, on February 17, 2010, Avenged Sevenfold stated that they had entered the studio, along with now-former Dream Theater drummer Mike Portnoy, to drum for the album, in place of The Rev.  The single "Nightmare" was digitally released on May 18, 2010. A preview for the song was released on May 6, 2010 on Amazon.com, but was removed soon after for unknown reasons. Mixing for the album had been completed in New York City, and Nightmare was finally released worldwide on July 27, 2010. It met with mixed to positive reviews from music critics but was well received by the fans. Nightmare beat sales projections easily, debuting at number one on the Billboard 200 with sales of 163,000 units in its first week. After finishing recording, in December, Portnoy and the band posted simultaneous statements on their websites stating that he would not be their replacement for The Rev. However, Portnoy did travel with the band overseas in December 2010 for three shows in Iraq and Kuwait sponsored by the USO. They played for U.S. Soldiers at Camp Adder, Camp Beuhring, and Balad Air Base. On January 20, 2011, Avenged Sevenfold announced via Facebook that former Confide drummer Arin Ilejay would begin touring with them that year. He was not yet considered a full-time member at this point.  Avenged Sevenfold performed at the Rock am Ring and Rock im Park festivals on June 3-5, 2011 alongside other bands such as Alter Bridge, System of a Down, and In Flames. On April 2011, the band headlined the Golden God Awards held by Metal Hammer. The same night the band won three awards for "Best Vocalist" (M. Shadows), "Epiphone Best Guitarist(s)" (Synyster Gates and Zacky Vengeance) and "Affliction's Album of The Year: " for Nightmare, while Mike Portnoy won the award for "Drum Workshop's Best Drummer" for his work on the album.  Avenged Sevenfold headlined the 2011 Uproar Festival with supporting acts Three Days Grace, Seether, Bullet for My Valentine, Escape The Fate, among others. In November and December 2011, the band went on their "Buried Alive" tour with supporting acts Hollywood Undead, Asking Alexandria, and Black Veil Brides.
Answer this question using a quote from the text above:

Who took Revs position going forward?

Answer:
former Dream Theater drummer Mike Portnoy,

Answer the question at the end by quoting:

Williams was born on April 5, 1973, in Virginia Beach, Virginia, the oldest of three sons of Pharaoh Williams, a handyman, and his wife Carolyn, a teacher. His roots extend for generations in Virginia and North Carolina, and one of his ancestors journeyed to West Africa in 1831, prompting other relatives to emigrate from America to Liberia in 1832. He met Chad Hugo in a seventh-grade summer band camp where Williams played the keyboards and drums and Hugo played tenor saxophone. They were also both members of a marching band; Williams played the snare drum while Hugo was drum major.
On March 31, 2014, Williams was announced as a new coach for the seventh season of The Voice, replacing CeeLo Green. On May 18, 2015, Team Pharrell had 16-year-old Sawyer Fredericks win the eighth season of The Voice. In June 2014, it was announced that Williams would make a guest appearance on the docu-series Sisterhood of Hip Hop. Williams was the executive producer of Atlanta rapper T.I.'s ninth studio album, Paperwork, which was released on October 21, 2014 by Grand Hustle and Columbia Records. In May 2014, Williams curated an art show named after his album, "Girl," at the Galerie Perrotin in Paris, France. The show included 37 artists including Takashi Murakami, JR, Daniel Arsham, and Marina Abramovic among others." Comme des Garcons developed a unisex fragrance with Williams scheduled for release in late 2014. Kaws designed the bottle artwork.  In January 2015, Williams and Al Gore announced that they are teaming up to create a 7-continent "Live Earth" concert on June 18 to raise awareness about and pressure governments to act on climate change. He is the musical director. On February 8, 2015, Williams made a cameo in an episode of The Simpsons entitled "Walking Big & Tall" where he comes to Springfield to write a new anthem for the town. Williams recorded three songs for the soundtrack to the animated film The SpongeBob Movie: Sponge Out of Water. He also recorded a song "Shine" with Gwen Stefani for the Paddington movie. At the 2015 Grammy Awards Williams performed an orchestral rendition of "Happy" with composer Hans Zimmer and pianist Lang Lang that included a tribute to the Black Lives Matter "Hands Up, Don't Shoot" movement inspired by Eric Garner's death and the events in Ferguson, Missouri. In 2015, a unanimous jury determined that Williams's 2013 hit song "Blurred Lines" was an infringement of the 1977 Marvin Gaye song "Got to Give It Up". The jury awarded the Gaye family $7.4 million in damages for the copyright infringement based on profits generated.  In October 2015, the Tisch School of the Arts at New York University named Williams as their artist-in-residence. He gave the 2017 commencement address at NYU and received an honorary degree on May 17, 2017.  Also in October 2015, Williams announced that he will perform with a gospel choir on Sunday, November 1, at Emanuel AME Church in Charleston, South Carolina, where nine black parishioners were shot and killed on June 17, allegedly by a young white man who is awaiting trial. This is part of a program on race relations being produced by A+E Networks and iHeartMedia. Williams plans to speak with community leaders and others affected by the shooting, which dominated the U.S. news media for several days. The two-hour Shining a Light: A Concert for Progress on Race in America program is scheduled to air November 20, and will also feature a concert to be filmed November 18 in Los Angeles. A goal of the program is to raise money for the victims of racial violence and for organizations around the country working to promote racial equity.

who did he work with?
On May 18, 2015, Team Pharrell had 16-year-old Sawyer Fredericks win the eighth season of The Voice.