The star of 1999 animated classic The Iron Giant is a 15m-tall robot with a heart of gold, a taste for scrap metal and some serious hidden firepower. Sounds like perfect Fallout 4 material to me. 3D artist Matthew Swanton made it happen.
Swanton's mod, available at NexusMods, replaces Fallout 4's Liberty Prime with a kinder, gentler robot buddy. Sure he's still a ruthless killer, but he's the sort of ruthless killer that might teach us a thing or two about nonviolence and individualism, if he ever stops shooting at things.
You can check out how it all came together over at Matthew Swanton's ArtStation page.