In an archived YouTube clip published on 2 November 2011, the man known as Mgaagaa is identified by his real name as Githinji Mwangi. The short video also says that many young people in town already recognized him by the nickname Mbusi.
The source material is brief and mostly serves as an introduction to the figure being shown. It does not add further reporting, but it does preserve the name link between Githinji Mwangi and the Mbusi alias.