Calvin Kirimba who also goes by the artistic name Calvo Mistari is a Kenyan Rapper. In 2010 calvo hooked up with radio Dj and close friend Dj Nruff to record an album titled Dj nruff and the Superheroes which reunited calvo with his Lyrical Assassins members alongside, Madtrax, Jahmani, Kenrazy, Girongo, Collo and Robba of Klepto and UK artists J royal and Marcy fine. His other releases include Too Fine Featuring J'Mani & HB, Masela Ft. Private wing and his new song 'Umenimaliz' Feat. Bobby Mapesa & Gaza.He Released his Debut Album 'Mwanaume Ni Effort' in 2015