He began his youth career with CD La Morenica, and later joined SD Ponferradina as a cadet; however, he was dissatisfied with his time at the club and returned to his previous team at the end of the season.
[6] On 20 September 2009, aged 19, Mitogo made his first appearance for Ponferradina's main squad, in a third level match against SD Eibar, scoring the only goal of the game in the process.
Playing for Ponferradina B against CD Huracán Z on 24 October 2010, Mitogo suffered a torn anterior cruciate ligament in his left knee, being sidelined for six months.
[8] In April 2010, Mitogo was called by the Equatoguinean national under-20 team for the second match against Gabon in the 2011 African Youth Championship qualifiers (preliminary round).
[12] At the time, only trace found by the authorities was his cell phone, which appeared on the bridge that connects the cities of Arnoia and Ribadavia.