Ludwig Anders Ahgren, known mononymously as Ludwig, is an American live streamer, YouTuber, podcaster, comedian, esports commentator, and competitor. Ahgren is best known for his live streams on Twitch from 2018 through late 2021, and on YouTube beginning in late 2021, where he broadcasts video-game-related content as well as non-video-game-related content such as game shows and contests. He is also known for his work as an esports commentator at various Super Smash Bros. Melee tournaments. He is the co-owner of the esports organization Moist Esports. He began streaming full-time on February 16, 2019.

Twitch is an American video live-streaming service that focuses on video game live streaming, including broadcasts of esports competitions, in addition to offering music broadcasts, creative content, and "in real life" streams. Twitch is operated by Twitch Interactive, a subsidiary of Amazon. It was introduced in June 2011 as a spin-off of the general-interest streaming platform Justin.tv. Content on the site can be viewed either live or via video on demand. The games shown on Twitch's current homepage are listed according to audience preference and include genres such as real-time strategy games (RTS), fighting games, racing games, and first-person shooters.