Early life and youth career German Olegovich Onugkha was born on 6 July 1996 in
Moscow, Russia, to a Russian mother and a Nigerian father. His family relocated to his mother's hometown of
Penza when he was three years old, and he was raised in Penza by his mother. As a child, Onugkha took up
futsal, joining a local youth sports centre at age six; his first coach was Yuriy Fyodorovich Klopov. In February 2018, Onugkha signed with
Volgar Astrakhan, a club competing in the
Russian Football National League (FNL). He made his debut on 4 March 2018 in a home fixture against
Khimki and recorded three goals in ten appearances for the club. He made his
Russian Premier League debut for Krasnodar on 5 July 2020 in a game against
Zenit Saint Petersburg, replacing
Marcus Berg in the 82nd minute. On 11 August 2020, he joined
FC Tambov on loan for the 2020–21 season, with an option to purchase. On 26 January 2021, the loan was terminated early.
Vejle On 1 February 2021, Onugkha joined
Danish Superliga club
Vejle on loan from
FC Krasnodar until the end of the 2020–21 season, with an option to purchase. On 4 July 2021, Krasnodar confirmed that Vejle had exercised this option and acquired Onugkha permanently.
Loans and return Shortly after his permanent move, Onugkha was loaned to Russian Premier League side
Krylia Sovetov Samara for the 2021–22 season, again including an option to buy. However, this loan was terminated early on 1 September 2021, when Onugkha moved on loan to
Rubin Kazan for the remainder of the season. Rubin opted not to exercise their purchase option, and he returned to Vejle. Following a subsequent loan spell at Israeli club
Bnei Sakhnin, Onugkha returned to Vejle for the latter part of the 2022–23 season, helping the team achieve promotion from the
Danish 1st Division to the Danish Superliga. His goals played a crucial role in Vejle's successful fight against relegation. On 20 May 2024, he scored both goals in a 2–0 win over
Hvidovre IF, securing the club's Superliga status for another season. Onugkha's performances earned praise for his versatility and consistency in front of goal. Commentators described him as a complete forward, capable of scoring from distance, in the box, and with headers.
Copenhagen Onugkha's form attracted interest from larger clubs, and in September 2024, he signed a two-year contract with reigning champions
FC Copenhagen, joining as a replacement for departing striker
Orri Óskarsson. Sporting director Sune Smith-Nielsen cited Onugkha's proven quality and familiarity with the league, while head coach
Jacob Neestrup also praised the acquisition, stating: "He is a player who has hurt many opponents – including ourselves... His raw strength, aerial ability and finishing skills with both feet make us believe in him as a future goalscorer for F.C. Copenhagen."
Return to Vejle (loan) In January 2025, Copenhagen loaned Onugkha back to Vejle for the remainder of the season, aiming to provide him with regular playing time and an opportunity to regain confidence. Onugkha himself welcomed the return, describing it as a "win-win" for both him and Vejle. "Maybe I could have stayed in Copenhagen... but I knew 100% that if I came here I would get to play. I really need to play, I need to get my confidence again," he said upon rejoining Vejle. Vejle were again fighting to avoid relegation, and Onugkha was determined to help the team survive, noting that in 2023–24 "we did it together." On his return, Onugkha quickly rediscovered his scoring touch, netting seven goals in his first five league matches. His contributions included a solo effort in a 3–2 win over
AGF, a long-range strike against
Lyngby, and two goals from corner kicks. Vejle head coach
Steffen Kielstrup praised Onugkha's maturity and impact, calling his early scoring run "impressive." His contributions helped Vejle escape relegation in the second to last round.
Return to Copenhagen Ahead of the
2025–26 season, sporting director Sune Smith-Nielsen confirmed that Onugkha was not part of Copenhagen’s first-team plans, and his return to training was delayed while the club sought a transfer solution. He rejoined the squad in late July, although the club remained intent on arranging a sale. Despite the uncertainty, Onugkha made a brief appearance on 23 August as a late substitute in a 1–1
Danish Superliga draw with
OB, amid ongoing transfer speculation.
Kayserispor On 12 September 2025, Onugkha completed a permanent transfer to Turkish
Süper Lig side
Kayserispor, signing a two-year contract. ==Career statistics==