Question: What member of the band Pendulum also co-wrote a Rihanna song?
Context: "Internet Friends" is a song by Australian electro house duo Knife Party.  It was released on 2011 as the first single from the Knife Party EP, "100% No Modern Talking" by Knife Party members (the former members of the drum and bass band Pendulum), Rob Swire and Gareth McGrillen.  The song entered the UK Singles Chart at number 89 due to strong sales, despite being initially available for free download.  The song appeared on "The Walking Dead". Vada Nobles is a record producer and songwriter.  He provided production for "Lost Ones" on Lauryn Hill's debut solo album, "The Miseducation of Lauryn Hill" (1998).  He co-wrote and co-produced the Rihanna song "Pon de Replay."  He co-wrote and co-produced the Hilary Duff singles "With Love" and "Stranger" in addition to the album track "Danger" on her 2007 album "Dignity".  He also produced remixes for the Hilary Duff singles "Play with Fire" and "Stranger." Pendulum is an Australian/British drum and bass and electronic rock band founded in 2002.  Pendulum originally formed in the city of Perth, Western Australia by Rob Swire, Gareth McGrillen, and Paul "El Hornet" Harding.  The band was later expanded to include members, Ben Mount, Peredur ap Gwynedd, and KJ Sawka.  Members Swire and McGrillen also formed the electro house duo Knife Party.  The group is notable for its distinctive sound, mixing hard rock with electronic music and covering a wide range of genres. "Stay Too Long" is the first single from British musician Plan B's second album "The Defamation of Strickland Banks".  The single was released on 8 January 2010.  Drum and bass group Pendulum also produced a remix, their first in three years, which was used as runway-soundtrack for the 2010 Victoria's Secret Fashion Show.  The Pendulum remix was also used on the video game , and a short version is used on the video game trailer.  The song was also used in part of episode two of the sixth series of Doctor Who Confidential.  The song was also used in The Inbetweeners Movie.  BBC also use this as their theme for tennis. "Granite" is the first single from Australian drum and bass band Pendulum's second studio album "In Silico".  It was released through Warner Music UK, and through the band's new Ear Storm imprint with Warner Music Group.  The song entered the UK Singles Chart on 11 November 2007, peaking at number 29 on 2 December.  The single is supposedly inspired by the likes of video game boss battles, including the theme of various battles against the Mario series' Bowser; it directly samples the beginning of the music from the castle stages in Super Mario World.  "Q Magazine" named it 24th in the 50 top records of December 2007.  When played in reverse, the main melody changes into the melody used in the end of the song, and vice versa.  The song is featured in Need for Speed Undercover, and also an ATV game of Pure. "Roc Me Out" is a song recorded by Barbadian recording artist Rihanna for her sixth studio album "Talk That Talk" (2011).  It was written by Ester Dean, Robert Swire, Gareth McGrillen, Mikkel S. Eriksen and Tor Erik Hermansen.  The track was produced by StarGate (Eriksen and Hermansen) and Knife Party (Swire and McGrillen).  "Roc Me Out" is a synthpop-influenced R&B song reminiscent of Rihanna's previous singles "Rude Boy" and "S&M".  It is set in "chugging" tempo and features heavy synths, "contagious" hooks and West Indian nuances.  Lyrically, the song features Rihanna sexually seducing her lover, while revealing her "nasty secrets".  Contemporary music critics were divided in their reviews of "Roc Me Out"; some of them labeled the song as a highlight on the album, while others criticized its similarity to Rihanna's previous singles.  Upon the release of "Talk That Talk", the song debuted on the lower regions of the singles charts in South Korea and the United Kingdom at number 73 and 176 respectively. "Watercolour" is the first single from the third album "Immersion" by Australian drum and bass band Pendulum.  This song has been remixed by dubstep artist Emalkay and by progressive house artist deadmau5.  The video was shot on 16 March 2010 at a studio in East London featuring around 70 fans as extras.  A behind-the-scenes video was released on the official Pendulum website.  The music video was released as a MySpace exclusive on 31 March.  Watercolour debuted number 4 on the UK charts making it the band's highest charted single in the United Kingdom to date.  The song also featured on "F1 2010" and "".  The song was also used in a promo during the 2011 A-League Grand Final.  It featured in the 2011 series of the BBC programme "Traffic Cops".  Pendulum performed Watercolour at the 2011 MTV Europe Music Awards at Belfast City Hall in Belfast, Northern Ireland, United Kingdom during the Backstage Show on November 6, 2011. "The Island" is the third single from Australian drum and bass band Pendulum to be released from their third studio album, "Immersion".  It was released on 19 September 2010.  "The Island" is a song split into two parts; "Dawn" and "Dusk", with "Dawn" receiving the majority of radio airplay.  In a recent interview, Swire stated that the premise of lyrics has to do with "two young lovers" and how they overcome adversity.  The single includes remixes by DJ and record producer Tiësto, and by drum and bass DJ and record producer Lenzman.  A Steve Angello, AN21 and Max Vangeli remix of the song was released as a digital single on 24 November 2010.  To promote the single, Pendulum also held a remix competition, releasing a free pack of remix stems taken from the "Dawn" part which was won by Madeon at the age of 16.  The "Dusk" part uses a sample from Missy Elliott's "I'm Really Hot".  Devin Townsend used the song as a structural basis for his song "Save Our Now" from his fifteenth studio album "Epicloud". Robert Swire-Thompson (born 5 November 1982) is an Australian singer, songwriter, musician, record producer and DJ, best known as the founder and vocalist of Australian/British drum and bass/electronic rock band Pendulum, as well as DJ and co-founder of electronic dance music duo Knife Party formed of Swire and Gareth McGrillen.  Originally from Perth, Western Australia, he relocated to the United Kingdom in 2003 with fellow Pendulum co-founders Gareth McGrillen and Paul "El Hornet" Harding.  Swire has since fulfilled a broad spectrum of roles as a member of Pendulum, ranging from song writing to singing while performing live with an unusual guitar-like MIDI controller – Starr Labs' Ztar Z6S-XPA.  Swire can also play guitar, bass, keyboards and percussion.  He is sometimes referred to by the stage name Anscenic. "Witchcraft" is the second single from Australian drum and bass band Pendulum from their third studio album, "Immersion".  It was released as a digital single on iTunes on 18 July 2010, with the CD single being released the following day.  It debuted at number sixty-two on the UK Singles Chart following high amounts of downloads from the release of the album.  The music video was shot on 2 June 2010 and finished on 25 June, as confirmed by Rob Swire's Twitter feed.  The single includes a drumstep mix by Rob Swire, remixes by drum and bass DJs and producers John B and Netsky, and a remix by house DJ and producer Chuckie.  An exclusive video of Witchcraft was placed on the Pendulum members section "The Other Side".  The single artwork shares a similarity with the artwork for Pendulum's debut album, "Hold Your Colour".  The song is used in many sport montages one of which being the end of season review by the BBC for the 2010/11 Formula One season.  An excerpt from the song was used in the video game and Guitar Hero Live.
Answer: Gareth McGrillen