They are a group (mostly two British players named Lewis and Simon) who record and play computer games. I first started watching their videos for World of Warcraft where they covered various raid bosses and explained strategies. Now I watch their "Minecraft" videos. These two avatars are the characters they play in this game.
Their videos are hilarious. I usually watch them at the end of the day to reward me for a hard day's work. If you haven't checked them out and want a good chuckle, then pop by their channel and give them a view. Artwork (c)
=mongrelssisterCharacters (c) Yogscast Group