Gnet, also stylized as g-NET, is a creative content agency that specializes in producing marketing campaigns for brands.
Gnet produced the animation and effects of the live-action Fallout 4 intro, as well as the game's "The Wanderer" trailer. They also worked on several trailers for Fallout 76, including its Live Action trailer, the Wild Appalachia trailer, Nuclear Winter and its developer interview video, as well as both the gameplay and launch trailer for Wastelanders.
Gnet is the only company attributed for work on the Fallout 4 intro in the game's credits, under "Intro Video Produced By." However, Mirada also lists the intro on their online portfolio for visual effects.