
Damian Mackle
- Known for
- Acting
- Born
- February 20, 1985
- Birthplace
- Belfast, Northern Ireland
Damian Mackle is an Irish professional wrestler. He is best known for his time in WWE, where he performed under the ring name Killian Dain and since his departure from WWE he has reverted back to his ring name on the independent circuit Big Damo. That ring name Big Damo is derived from his first ring name, Damian O'Connor. Prior to joining WWE, he won the ICW World Heavyweight Championship while wrestling for Insane Championship Wrestling. He also wrestled for numerous promotions on the British independent circuit, around Europe, and in the USA including All Elite Wrestling, Progress Wrestling, Revolution Pro Wrestling, Westside Xtreme Wrestling, Absolute Intense Wrestling, Beyond Wrestling, Premier British Wrestling, Scottish Wrestling Alliance, What Culture Pro Wrestling and IPW:UK. On 19 October 2016, WWE announced that Mackle had signed a developmental contract with the company and had arrived at the WWE Performance Center in Orlando, Florida. He began to work in the NXT brand as part of the stable Sanity, along with Nikki Cross, Eric Young and Alexander Wolfe. In 2018, Dain, Wolfe and Young were drafted to SmackDown, where they worked as a stable until the dissolution. Then, he was drafted again to NXT, where he stayed until his release, in June 2021.
Filmography

PROGRESS Chapter 193: PROGRESS Las Vegas II 2026
as Big Damo

PROGRESS Chapter 152: For The Love Of PROGRESS 2023
as Big Damo
- RevPro Revolution Rumble 2023
RevPro Revolution Rumble 2023 2023
as Big Damo

PROGRESS Chapter 145: Wrestling Witch Face - Trick Or Treat 2022
as Big Damo

Ric Flair's Last Match: Preshow 2022
as Big Damo

NJPW Music City Mayhem 2022
as Big Damo

Ospreay: The Rise of an International Pro Wrestler 2020
Actor

NXT TakeOver: WarGames 2019
as Killian Dain

WWE Best of NXT TakeOver 2018 2019
as Killian Dain

WWE Extreme Rules 2018 2018
as Killian Dain

NXT Takeover: New Orleans 2018
as Killian Dain

NXT: Best of 2017 2018
Actor

NXT TakeOver: WarGames 2017
as Killain Dain

NXT TakeOver: Brooklyn III 2017
as Killian Dam

WWE NXT Takeover: Chicago 2017
as Killian Dain

WWE WrestleMania 33 2017
as Killian Dain (Preshow)

NXT Takeover: Orlando 2017
as Killian Dane

NXT Takeover: San Antonio 2017
as Killian Dain

RevPro Uprising 2016 2016
as Big Damo

RevPro: Angle Vs. Sabre Jr. 2016
as Big Damo
- RPW: Sittingbourne Spectacular 2016
RPW: Sittingbourne Spectacular 2016 2016
as Big Damo
- RPW: Epic Encounter 2016
RPW: Epic Encounter 2016 2016
as Big Damo

TNA One Night Only: Joker's Wild 4 2016
as Big Damo
- PROGRESS Chapter 26: Unknown Pleasures
PROGRESS Chapter 26: Unknown Pleasures 2016
as Damian O'Connor

RevPro High Stakes 2016 2016
as Big Damo
- ICW Fear & Loathing VIII
ICW Fear & Loathing VIII 2015
as Big Damo
- RevPro & NJPW: Global Wars UK
RevPro & NJPW: Global Wars UK 2015
as Damian O'Connor

RevPro Uprising 2015 2015
as Big Damo
- RevPro Summer Sizzler 2015
RevPro Summer Sizzler 2015 2015
as Damian O'Connor
- RPW: At Our Best 2015
RPW: At Our Best 2015 2015
as Damian O'Connor

EVE Special Edition 2012
as Damian O'Connor
Credits from TMDB.