Question: The bassist for Marianas Trench and Alice in Chains share what common first name?

Context paragraphs:
Marianas Trench discography: The discography of Marianas Trench, a Canadian pop rock band, consists of four studio albums, three extended plays, 18 singles and 18 music videos.  The band recorded and released their debut EP in 2002, entitled "Marianas Trench" containing 8 tracks.

Never Say Die Tour (Marianas Trench tour): The Never Say Die Tour (Marianas Trench) is a Canadian concert tour by Canadian pop-rock band Marianas Trench (band) in support of their album "Astoria (Marianas Trench album)".

Face the Music (EP): Face the Music: The EP (also known as Face the Music) is the title of the second extended play released by Canadian pop-rock group Marianas Trench.  Featuring popular songs from the group's most recent album, "Ever After" (2011), the EP marks Marianas Trench's first official US music release.  It was first released May 10, 2013 in New Zealand before being released in North America later that month, and was distributed through 604 Records, Cherrytree Records, and Interscope Records.

Trenchtown: Trench Town (also Trenchtown) is a neighborhood located in the parish of St. Andrew which shares municipality with Kingston, the capital and largest city of Jamaica.  In the 1960s Trench Town was known as the Hollywood of Jamaica.  Today Trench Town is the location of the Trench Town Culture Yard Museum, a National Heritage Site presenting the unique history and contribution of Trench Town to Jamaica.  Trench Town is the birthplace of rocksteady and reggae music, as well as the home of reggae and Rastafari ambassador Bob Marley.  The neighborhood gets its name from its previous designation as Trench Pen, 400 acres of land once used for livestock by Daniel Power Trench, an Irish immigrant of the 18th century (descendants of the Earls of Clancarty).  The Trench family abandoned the land in the late 19th century.  It is a common misconception that the name comes from the large open storm-water drain that runs through the neighbourhood in the middle of Collie Smith Drive.  Trench Town is home to the communities of Wilton Gardens [Rema], Federal Gardens, Arnette Gardens [Jungle], Havana, Buckers and others.  Trench Town today is also the home of two of Jamaica's top Premier League football club teams, Arnette Gardens and Boys' Town.

Mariana Trench: The Mariana Trench or Marianas Trench is the deepest part of the world's oceans.  It is located in the western Pacific Ocean, an average of 200 km to the east of the Mariana Islands, in the Western Pacific East of Philippines.  It is a crescent-shaped scar in the Earth's crust, and measures about 2550 km long and 69 km wide on average.  It reaches a maximum-known depth of 10994 m (± 40 m ) at a small slot-shaped valley in its floor known as the Challenger Deep, at its southern end, although some unrepeated measurements place the deepest portion at 11034 m .  If Mount Everest were dropped into the trench at this point, its peak would still be over 1.6 km underwater.  In 2009, Marianas Trench was established as a United States National Monument.

Marianas Trench (band): Marianas Trench is a Canadian pop punk band from Vancouver, British Columbia, formed in 2001.  The band consists of members Josh Ramsay (lead vocalist, rhythm guitarist, pianist, songwriter, and occasional drummer), Matt Webb (lead guitarist and backing vocalist), Mike Ayley (bass guitarist and backing vocalist), and Ian Casselman (drummer, percussionist, and backing vocalist).  The band has released four full-length studio albums, the most recent titled "Astoria", released on October 23, 2015, along with 2011's "Ever After", 2009's "Masterpiece Theatre" and 2006's "Fix Me".  Their third album "Ever After" was nominated for a Juno Award.

Alice in Chains: Alice in Chains is an American rock band formed in Seattle, Washington, in 1987 by guitarist/vocalist Jerry Cantrell and drummer Sean Kinney, who then recruited bassist Mike Starr and lead vocalist Layne Staley.  Mike Starr was replaced in 1993 by Mike Inez.

Something Old / Something New: Something Old / Something New is the third extended play recorded by Canadian rock group Marianas Trench, released May 26, 2015 through 604 Records, Cherrytree Records, and Interscope Records.  It contains two songs originally recorded for the band's fourth studio album, "Astoria" (2015), and two tracks that pre-date the recording of their debut studio album, "Fix Me" (2006), from their Self-Titled EP "Marianas Trench" (2002).  The EP was released in promotion of "Astoria" and serves as a "thank you" to their fans.

Ibrahim (name): Ibrahim (Arabic: إبراهيم‎ ‎ , "Ibrāhīm" ) is the Arabic name of the prophet and patriarch Abraham.  He was God's messenger.  It is a common first name and surname among Muslims and Arab Christians, a derivative of the name Abraham or Avram from Judaism and Christianity in the Middle East.  In Lebanon and Maghreb, Brahim is a common diminutive for the first name Ibrahim.

Krischan: Krischan and similar are surnames deriving from a German dialect of the word Christian.  Alternative spellings include Krischon, Krizan, Kryschan, and Krishan.  The Krischan surname is German in origin.  The name is also used as a first name mostly in German speaking countries serving as a variant of the more common first name Christian.  It is also speculated that the name is largely east German in origin considering the likelihood of Slavic influence in the spelling.  Much of eastern Germany throughout history was at one point or another settled by Slavic tribes and the influence of Slavic languages becomes evident in various personal, place and surnames of the region.

Supporting paragraphs: Marianas Trench (band) Alice in Chains
Answer: Mike