Oliver Sauter (born 9 May 1995) is a Swiss professional wrestler signed to WWE, where he performs on the NXT brand under the ring name Oro Mensah as a member of The Meta-Four stable.
He began competing for New European Championship Wrestling in early 2014, where he defeated former tag team partner Cash Crash on 1 February 2014.
On 19 April 2019, Sauter made his NXT UK debut as a face under the ring name Oliver Carter in a dark match, which he lost to Kassius Ohno.
He returned to the brand on 17 January 2020, where he teamed with Smith to defeat Pretty Deadly (Lewis Howley and Sam Stoker).
On 7 March, he participated in a battle royal to determine the next challenger for the NXT UK Championship, but failed to win the match.
On the 2 June 2022 episode of NXT UK, Carter and Smith won the NXT UK Tag Team Championship by defeating previous champions Moustache Mountain (Trent Seven and Tyler Bate) and Die Familie (Teoman and Rohan Raja) in a triple threat match.