The family of Skipper is originally from Lolland, but he was born and raised in Vestegnen, Greater Copenhagen.[2] When he went to primary school, he skipped second grade which he meant contributed to him becoming mature from an early age.[2]
Club career
Brøndby
Skipper joined Brøndby IF aged 4.[3][4] After playing in the youth of Hvidovre IF for a few years,[4] he rejoined Brøndby in the spring of 2013 at under-13 level.[4][2] In April 2015, Skipper signed his first contract with Brøndby, keeping him in the club until 2017.[5] As an under-19 player, German club VfL Wolfsburg showed interest in signing him to their youth academy, but a move never materialised.[3]
On 30 November 2019, Brøndby announced that Skipper would become a permanent part of the first team in the spring of 2019. Concomitantly, he signed his first professional contract which would keep him in the club until 2021.[6][7]
On 28 July 2019, Skipper made his competitive debut with a start in the Danish Superliga match against OB which ended with a 3–2 win for Brøndby.[8] His performance was subsequently praised by pundits.[9] Since his debut in week three of the Danish Superliga, he played each match until Brøndby signed free agent Andreas Maxsø in mid-September. Despite assuming a new role as a substitute, Skipper was still recognised and lauded by the fans of the club.[10] On 22 January 2020, Skipper signed a new three-and-a-half-year contract with Brøndby, running until 2023.[11]
Loan to Hobro
On 29 January 2021, Skipper was loaned out to Danish 1st Division club Hobro on a six-month deal.[12][13] He made his debut for the club on 13 February in a 1–1 draw against HB Køge.[14]
On 24 January 2022, Skipper signed a three-year contract with Norwegian Eliteserien club Sarpsborg 08.[18][19] He made his competitive debut for the club on 3 April, coming off the bench in the 36th minute for injured Magnar Ødegaard and putting on a convincing performance despite a 1–0 loss at home to Viking in the 2022 season opener.[20][21] The following week, he was a starter at centre-back alongside Bjørn Inge Utvik in a 3–2 away victory against Kristiansund.[22]
Esbjerg fB
On 2 September 2024 newly-promoted Danish 1st Division club Esbjerg fB confirmed that Skipper joined the club on a deal until June 2027.[23]
International career
Skipper has won two caps for Denmark at U19 level, and has played multiple matches for national youth teams at different levels.[24]