Walurambo is a Garry's Mod character created by Apoc Hedgie. He appears to be a combination of Waluigi from the Super Mario series and John Rambo from the Rambo film series. He is depicted as being very heroic and powerful.
Walurambo is interpreted as a very strong and heroic character who is able to defeat any enemies in a single blow, though officially he just looks stronger than he really is. Despite being based on a villian from the Mario series, Walurambo is depicted as a hero. No one messes with Walurambo!