The Amps were an American alternative/indie rock group.
 Formed by Kim Deal in 1995 after her band the Breeders went on hiatus, the group consisted of Deal, vocals and guitars; Luis Lerma, bass; Nate Farley, guitars; and the Breeders' Jim Macpherson, drums.
 The Breeders' Kelley Deal, Kim's sister, was also briefly involved, but had to leave the band due to drug problems.
 The group was named when Kim Deal started calling herself Tammy Ampersand for fun, and the band Tammy and the Amps.
 They recorded the album "Pacer" in Ireland and the United States.
Fantômas is an American metal supergroup, formed in 1998 in California.
 It features vocalist Mike Patton (Faith No More, Mr. Bungle), drummer Dave Lombardo (ex-Slayer), guitarist Buzz Osborne (Melvins) and bassist Trevor Dunn (Mr. Bungle, Tomahawk).
 The band is named after Fantômas, a supervillain featured in a series of crime novels popular in France before World War I and in film, most notably in the 60s French movie series.
Tomahawk is the debut studio album by American experimental rock band Tomahawk.
 Recorded after a meeting between vocalist Mike Patton and guitarist Duane Denison, the album features members of Faith No More, The Jesus Lizard, Helmet and Melvins.
 The band toured with Tool in support of the record, but were not well received by Tool's fans.
Trevor Roy Dunn (born January 30, 1968) is an American composer, bass guitarist, and double bassist.
 He came to prominence in the 1990s with the experimental band Mr. Bungle.
 He has since worked in an array of musical styles, notably with singer and Mr. Bungle co-founder Mike Patton; with saxophonist/composer John Zorn; brief collaboration with Secret Chiefs 3 and with his own avant-garde jazz/rock ensemble Trevor Dunn's Trio-Convulsant and later with rock driven group MadLove.
 He is also a member of the band Tomahawk, replacing founding member Kevin Rutmanis.
The discography of Helmet, a New York-based alternative metal band formed in 1989, consists of eight full-length studio albums, two compilation albums, fifteen singles, and fourteen music videos.
 This list does not include material performed by members or former members of Helmet that was recorded with Adair, Anthrax, Band of Susans, Biohazard, The Cult, Disturbing the Peace, Exodus, Norma Jean, Testament, Tomahawk and White Zombie.
Tomahawk is an American rock supergroup.
 They formed in 1999 when Fantômas, ex-Mr. Bungle and Faith No More singer/keyboardist Mike Patton and ex-The Jesus Lizard guitar player Duane Denison started swapping tapes with the intention of collaborating.
 Denison then recruited ex-Helmet drummer John Stanier, while Patton recruited then-Melvins/ex-Cows bass player Kevin Rutmanis into the group.
The Mark of Cain (also seen as the initialism, TMOC) are a hard rock, alternative metal band from Adelaide, South Australia.
 Their style has been likened to that of Helmet and Rollins Band, yet this band pre-dates both groups and was influenced by the early work of Joy Division, Big Black and United States hardcore groups.
 The Mark of Cain were formed in mid-1984 by brothers, John (guitar) and Kim Scott (bass guitar), with Rod Archer on vocals and Gavin Atkinson playing drums.
 Before long, Archer had left the group and John Scott took on the lead vocal role and the group has remained a trio ever since.
 The Scotts have been the core of the band which has featured 15 different drummers.
 Since January 2001, former Helmet member John Stanier has been their drummer; he is also concurrently with Tomahawk and Battles.
 Australian musicologist, Ian McFarlane, described the group's sound as "Gloomy, monotonous vocals and bleak slabs of metallic guitar did battle over a lurching rhythm section to arrive at a harsh sound."
 Rod Archer died on 26 February 2016.
Dead Cross are an American hardcore punk and heavy metal supergroup formed in Southern California.
 The band consists of guitarist Mike Crain (Retox), bassist Justin Pearson (the Locust, Head Wound City and Retox), drummer Dave Lombardo (Suicidal Tendencies, Misfits, Slayer and Fantômas) and vocalist Mike Patton (currently of Faith No More, Tomahawk and Fantômas).
Violent Society is a punk rock band that formed in 1990.
 The band is based out of Philadelphia, PA.
 The band was formed in high school by two friends, Mike (Mick), Mike Barbecow, and drummer Andy Petrov.
 Bill (Dirty Rotten Bill) and Pat Kelly filled out the lineup in 1990/91.
 Dave (Huevos) replaced Bill shortly before recording the album.
 "Not Enjoyin' It" In 1996 that was produced by scott stedeford and landed in the top 10 punk albums of the 90's.
 "The Rise of Punk" album was released along with about a half dozen singles, that included East Coast Assholes that was released in 1994 and also received similar acclaim.
 The year 1997 saw the release of "Times of Distraught" and in 1999, "Separation is Killing Us," the final album before breaking up.
 Violent Society has toured the United States and Europe numerous times.
 The band primarily stopped playing together in 2003, occasionally performing "reunion" shows from.
 However, the band has since regrouped in 2008 with the current lineup.
 2010 saw a return to touring with a West Coast tour in June along with the release of "We Don't Believe" on Creep Records.
 The band recently recorded new material for a soon-to-be-released Kill Your Idols tribute album and an upcoming Christmas compilation.
 The band reached back to olden days to capture Showcase Showdown's "Merry Christmas, I Fucked Your Snowman".
 They are now concentrating on new material.
The Bombpops is an American Pop Punk band formed in San Diego, California, United States in 2007.
 The band was formed by co-frontwomen Jen Razavi and Poli van Dam, followed many years later by the bassist Neil Wayne and the drummer Josh Lewis.
 The band has seen many formation changes since 2007, which contributed with the band only releasing their first full-length album, "Fear of Missing Out", on February 10, 2017.
 The band's music is heavily influenced by 90's Epitaph Records and Fat Wreck Chords bands, such as No Use For a Name, Pennywise, Bad Religion, Strung Out and also mainstream bands like Green Day and Blink 182.

Question: Was the band Tomahawk and the band The Amps both formed in the 90s?
Answer: yes