Reuben Shalu Gabriel MON (born 25 September 1990) is a Nigerian professional footballer who plays as a defensive midfielder for Shabab Sahel.

[2] On 2 April 2013, Gabriel joined Scottish Premier League side Kilmarnock as a free agent, signing a three-year contract.

[3][4][5][6] He made his debut for his new team on 29 November, in a Scottish Cup tie against Dundee United where he conceded a penalty in a 2–5 away defeat.

Reuben scored his first international on 9 June 2012, netting the opener in an eventual 1–1 away draw against Malawi for the 2014 FIFA World Cup qualifiers.

[15] He made his debut in the tournament on 30 June, replacing injured Ogenyi Onazi in the 59th minute of an eventual 0–2 loss to France for the round-of-16.