Luchasaurus

Austin Matelson (born March 10, 1985), better known by his ring name Luchasaurus, is an American luchador enmascarado (or masked professional wrestler). He is signed to All Elite Wrestling (AEW), where he is one-half of Jurassic Express with "Jungle" Jack Perry.

Matelson began his professional wrestling career in 2009. He then signed a developmental contract with WWE in 2012 and was sent to train at the former Florida Championship Wrestling (FCW) under the ring name Judas Devlin; that same year, FCW was rebranded as NXT, where Matelson remained until his release in 2014. After a two-year hiatus, he signed with Lucha Underground as Vibora and worked there from 2016 to 2018. He also began working on the independent circuit in 2016 under the Luchasaurus gimmick until he signed with AEW in 2019. He continued his partnership with Jungle Boy as Jurassic Express, becoming a one-time AEW World Tag Team Champion. He later aligned with Christian Cage, which saw him win the AEW TNT Championship, and later took on the ring name Killswitch in September 2023.