The Malevolent-class originates from one of the numerous concept arts that would later become for the Executor.  Slightly smaller than the Executor it shares its basic shape but brings its own twist into the mix. The bridge is mounted alot further to the front and the ventral hangar section is alot larger than the Executor's. 

Marco Antonio initially created the model but eventually had to pass it on due to real life matters. So I humbly took it upon me to finish what he started.