Mazinkaizer SKL (マジンカイザースカル, Majinkaizā Sukaru) is a Japanese OVA spinoff of Go Nagai's Mazinkaiser, which was in itself a spinoff of Mazinger Z. The first episode of the OVA was first screened on November 27, 2010 (2010-11-27) and was released on January 28, 2011 (2011-01-28) and . It also has a novel adaptation serialized in ASCII Media Works' Dengeki Hobby Magazine and a manga adaptation published in the mobile phone magazine Shu 2 Comic Gekkin.