Question: With whom did this Brazilian singer, guitarist, and songwriter of metal band Cavalera Conspiracy, who mentioned Terveet Kädet as one of his all-time favourite bands co-found the band Sepultura?
Context: Massimiliano Antonio "Max" Cavalera (] , born August 4, 1969) is a Brazilian singer, guitarist, and songwriter who currently plays in heavy metal bands Soulfly, Cavalera Conspiracy, and Killer Be Killed.  In 1984, he co-founded the acclaimed heavy metal band Sepultura with his brother Igor Cavalera and was the band's lead singer and rhythm guitarist until he left in 1996.  Cavalera was also involved in a short-lived side project called Nailbomb. Throwdown is an American heavy metal band from Orange County, California, formed in 1997.  They have toured as part of Ozzfest, Sounds of the Underground, Hellfest, and Warped Tour, and with bands such as In Flames, Lamb of God, As I Lay Dying, Killswitch Engage, Korn and Cavalera Conspiracy.  The songs "Forever" and "Burn" have been staples on MTV2's Headbanger's Ball and Revolver Magazine called them part of "The Future of Metal" after hearing the album "Vendetta".  Initially branded a hardcore band, their most recent albums "Venom and Tears" and "Deathless" have taken a sharp direction towards metal, with critics likening the band's sound to that of Pantera, Sepultura, and Crowbar. Igor Graziano Cavalera (born September 4, 1970 in Belo Horizonte, Brazil) is a Brazilian musician.  He is best known as the former drummer for Brazilian heavy metal band Sepultura, which he co-founded with his brother Max in 1984.  Max left the band in 1996, and Cavalera himself would depart ten years later, making him the last original member of Sepultura to leave the band.  The brothers have since reunited in the band Cavalera Conspiracy. Marc Rizzo is the lead guitarist of American metal band Soulfly and formerly of Ill Niño.  He has featured on seven Soulfly albums to date: "Prophecy", "Dark Ages", "Conquer", "Omen", "Enslaved", "Savages", and "Archangel".  He has also released three solo instrumental albums; "Colossal Myopia", "The Ultimate Devotion", and "Legionnaire".  Marc is also a member of Cavalera Conspiracy, a side project with the co-founders of Sepultura, Max and Igor Cavalera.  The band released their debut album "Inflikted" in 2008, "Blunt Force Trauma" in 2011 and "Pandemonium" in 2014.  In March 2015 it was announced that Marc is playing guitar for Misfits.  His only show with the band so far took place at Dutch Comic Con.  In June 2016 he joined Dead by Wednesday as second guitar player. Cavalera Conspiracy is an American heavy metal band founded by Brazilian brothers Max (vocals, rhythm guitar) and Igor Cavalera (drums), currently performing along with American musicians Marc Rizzo (lead guitar) and Tony Campos (bass).  The band originally formed in 2007 as Inflikted but changed its name for legal reasons.  The group's creation marked the end of a 10-year feud between the Cavalera brothers who founded Sepultura in the early 1980s. Terveet Kädet were a Finnish hardcore punk band, the first in Finland.  The group was founded in Tornio in January 1980.  They have had a major influence on bands from all over the world, especially in Brazil (which some have claimed was because of a member from the leading band Olho Seco and his enthusiasm and connections to that country's scene).  Max Cavalera of Sepultura and Soulfly has mentioned Terveet Kädet as one of his all-time favourite bands. Nailbomb was a metal band formed in 1994 as side project by Brazilian musician Max Cavalera of Sepultura, Cavalera Conspiracy and Soulfly and English musician Alex Newport of Fudge Tunnel.  The band recorded one studio album, "Point Blank", and played one live performance before disbanding the next year. Roots is the sixth studio album by Brazilian heavy metal band Sepultura.  It was released in Europe on  20, 1996 (1996--) and in the U.S. three weeks later on March 12 by Roadrunner Records.  It is the band's last studio album to feature founding member and vocalist/rhythm guitarist Max Cavalera.  Following the shift to slower tempos and Latin-tinged rhythms on the album "Chaos A.D.", "Roots" delves even further into Brazilian musical textures and features significant contributions from Brazilian musician Carlinhos Brown, who guided and arranged the sections throughout the album that feature ensemble percussion playing.  The song "Lookaway" also features guest appearances by Korn vocalist Jonathan Davis, former Korn drummer David Silveria, former Limp Bizkit turntablist DJ Lethal, and Faith No More/Mr. Bungle/Tomahawk/Fantômas vocalist Mike Patton.  The album draws influence from the then-surging nu metal movement, specifically Korn (whose first two albums were also produced by Ross Robinson) and Deftones.  (After leaving the band, Max Cavalera would continue to pursue the nu metal and "world" stylings of "Roots" with his solo project Soulfly.)  Since its release, "Roots" has sold over 2 million copies worldwide. Blunt Force Trauma is the second studio album by American groove metal band Cavalera Conspiracy.  The album was released on March 29, 2011 through Roadrunner Records. Incite is an American groove metal band from Phoenix, Arizona formed in 2004.  The band currently consists of Richie Cavalera (vocals), Christopher EL (bass guitar) and Lennon Lopez (drums).  Frontman Richie Cavalera is best known as the stepson of former Sepultura and Nailbomb, and current Soulfly and Cavalera Conspiracy frontman Max Cavalera.
Answer: his brother Igor