Eye for an Eye is a Polish hardcore punk rock band founded in 1997 in Bielsko-Biała.
 EFAE, as it is also known, plays an old school style of punk, more along the veins of The Exploited or even, some say, Agnostic Front.
 The punk stylings of EFAE has been compared to fellow countrymen Post Regiment, perhaps mostly due to the common factor of a female vocalist.
 However, EFAE's Anna Koziel's vocal style is remarkably different from the nowadays disbanded Post Regiment's Dominika "Nika" Domczyk's style.
 EFAE has been touring relatively extensively in a musical climate that is not at the moment very receptive for retro trends.
Fury were a thrash metal band formed in Broken Hill, Australia in 1993 and for a time were based in Adelaide, Australia.
 Due to talks with their record label, Fury became known as The Harrowed in Europe, although they retained their original moniker of Fury within Australia.
 The group's former guitarist, Ricky Boon, is blind due to the degenerative eye condition Retinitis Pigmentosa.
 They had released several tracks on American compilation albums for Dwell Records, recording covers for Megadeth, Suicidal Tendencies, Death and King Diamond tribute albums.
 The band is currently on an indefinite hiatus whilst members Ricky Boon, Mick O'Neil and Tim Hinton focus on a new project.
Fleurs is the debut album from the experimental electronic group Former Ghosts, a collaborative effort between Jamie Stewart (Xiu Xiu), Freddy Ruppert ("This Song Is A Mess But So Am I") and Nika Roza (Zola Jesus).
The "Mortal Kombat" series of fighting games, created by Ed Boon and John Tobias, has been the subject of various controversies since its creation in the 1990s.
 In particular, "Mortal Kombat" has often been criticised from a broad spectrum of politicians and other critics for its unrestrained use of graphic and bloody violence (both in the game's regular combat scenes and its Fatalities—finishing moves which allow the player to kill or otherwise maim opponent characters).
 The violent nature of the series, one of the earliest of its kind, has led to the creation and continued presence of the Entertainment Software Rating Board and other ratings boards for video games.
 Various "Mortal Kombat" games have been censored or banned in several countries, and the franchise was the subject of several court cases.
Portishead is the eponymous second studio album by English band Portishead, released in September 1997.
New Love is the second album from experimental electronic group Former Ghosts, a collaborative effort between Jamie Stewart (Xiu Xiu), Freddy Ruppert (This Song Is A Mess But So Am I), Yasmine Kittles (TEARIST) and Nika Roza Danilova (Zola Jesus).
Infinite AIS Cycling Team ("UCI team code:" IAC ) is a Thai road bicycle racing team.
 It was known in 2014 as Singha Infinite Cycling Team, Singha is a Thai Boon Rawd Brewery was the first of its kind in Thailand, and produces beer under the Singha brand name.
 Infinite is a Thai bicycle manufacturer.
 The team is a member of the UCI Continental cycling team.
Feminnem was a girl group from Croatia and Bosnia and Herzegovina composed of three members.
 They represented both countries at the Eurovision Song Contest; Bosnia and Herzegovina in 2005 (with original members Ivana Marić, Neda Parmać and Pamela Ramljak) and Croatia in 2010 (when the group consisted of Nika Antolos, Parmać and Ramljak).
 On 21 February 2012 Pamela, Neda and Nika decided to start solo careers and leave Feminnem and effectively disbanded the group.
The Mijikenda ("the Nine Tribes") are a group of nine related Bantu ethnic groups inhabiting the coast of Kenya, between the Sabaki and the Umba rivers, in an area stretching from the border with Tanzania in the south to the border near Somalia in the north.
 Archaeologist Chapuruka Kusimba contends that the Mijikenda formerly resided in coastal cities, but later settled in Kenya's hinterlands to avoid submission to dominant Portuguese forces that were then in control.
 Historically, these Mijikenda ethnic groups have been called the Nyika or Nika by outsiders.
 It is a derogatory term meaning "bush people."
Dominika Jarzębowska, known by her stage name Nika Boon, is a Polish singer and songwriter based in London, UK.
 She is best known for her vocal style and husky voice.
 She is currently working on her new album (release 2017) in collaboration with musicians namely John Baggott (who plays keyboard & moogs for Massive Attack, Portishead, Robert Plant), Ian Matthews (drummer from Kasabian), Jay Stapley (guitarist associated with Pink Floyd and Mike Oldfield) and Carey Willetts (bass player from band Athlete).

Question: What kind of group does Nika Boon and Portishead have in common?
Answer: band