Killian Dain
A powerhouse from Belfast who brought a bruising, hard-hitting style to wrestling promotions across the UK, Europe, and WWE's NXT.
Born 1985 (age 41)·Northern Irish professional wrestler·Birthday: February 20·Millennials
Biography
Hailing from Belfast, Northern Ireland, Damian Mackle, known as Big Damo or Killian Dain, is a product of the gritty European independent scene. Trained in Ireland, his colossal frame and surprisingly agile offense made him a dominant force in promotions like Insane Championship Wrestling (ICW), where he became a heavyweight champion. WWE took notice, bringing him to NXT as Killian Dain, a central figure in the chaotic faction SAnitY. His WWE run showcased his ability to be both a terrifying monster and a surprisingly charismatic presence. After his release, Mackle returned to his roots on the independents and in Japan, respected as a veteran whose matches are defined by stiff strikes, powerful slams, and an undeniable connection with crowds that appreciate unvarnished physicality.
Millennials
1981–1996
The first digital natives. Grew up with the internet, came of age during 9/11 and the 2008 crash. Highly educated, deeply indebted, slower to marry and buy houses. Redefined work, identity, and what it means to be an adult.
Killian was born in 1985, placing them squarely in the Millennials. The events that shaped this generation — the internet revolution, 9/11, and the 2008 financial crisis — shaped the world they entered and the choices available to them.
#1 When Killian Was Born
The biggest hits of 1985
#1 Movie
Back to the Future
Best Picture
Out of Africa
#1 TV Show
Dynasty
Killian's Life & Times
The world at every milestone
1985Born
Live Aid concerts raise money for Ethiopian famine
Gas: $1.12/galHome: $62,900Min wage: $3.35/hrPresident: Ronald Reagan"Careless Whisper" — Wham!Best Picture: Out of Africa
1990Started school
Hubble Space Telescope launched; Germany reunifies
Gas: $1.15/galHome: $79,100Min wage: $3.80/hrPresident: George H.W. Bush"Hold On" — Wilson PhillipsBest Picture: Dances with Wolves
1998Became a teenager
Google founded; Clinton impeachment
Gas: $1.06/galHome: $107,300Min wage: $5.15/hrPresident: Bill Clinton"Too Close" — NextBest Picture: Shakespeare in Love
2001Could drive
September 11 attacks transform the world
Gas: $1.46/galHome: $126,400Min wage: $5.15/hrPresident: George W. Bush"Hanging by a Moment" — LifehouseBest Picture: A Beautiful Mind
2003Could vote
US invades Iraq; Human Genome Project completed
Gas: $1.59/galHome: $146,000Min wage: $5.15/hrPresident: George W. Bush"In Da Club" — 50 CentBest Picture: The Lord of the Rings: The Return of the King
2006Turned 21
Twitter launches; Pluto reclassified as dwarf planet
Gas: $2.59/galHome: $174,700Min wage: $5.15/hrPresident: George W. Bush"Bad Day" — Daniel PowterBest Picture: The Departed
2015Turned 30
Paris climate agreement; same-sex marriage legalized in the US
Gas: $2.43/galHome: $171,900Min wage: $7.25/hrPresident: Barack Obama"Uptown Funk" — Mark Ronson ft. Bruno MarsBest Picture: Spotlight
2025Turned 40
AI agents go mainstream
Gas: $3.10/galHome: $385,000Min wage: $7.25/hrPresident: Donald Trump"APT." — Rose & Bruno Mars
2026Age 41 today
Gas: $3.91/galPresident: Donald Trump
Key Achievements
- Captured the Insane Championship Wrestling (ICW) World Heavyweight Championship, becoming a top star in the UK wrestling scene.
- Was a featured performer in WWE's NXT brand as Killian Dain, a core member of the dominant SAnitY faction.
- Competed in the prestigious 2017 WWE United Kingdom Championship Tournament, showcasing his talent on a major platform.
- Held the PROGRESS Wrestling Atlas Championship, a title designed for larger heavyweight competitors.
Did You Know?
Before wrestling, he worked as a primary school teacher in Northern Ireland.
He is a lifelong fan of the Belfast-based football club Linfield F.C.
His ring name 'Big Damo' is a straightforward reference to his real first name, Damian.
He is known for his finishing move, the 'Ulster Plantation,' a devastating senton bomb.
“This isn't a performance; it's a fight from Belfast.”
