Jakobthecool867 is a YouTuber and the name of the character that appears in some of his videos.
In M.U.G.E.N, Jakobthecool867 has been made by the YouTuber, Jakobthecool867. It uses sprites taken from a spritesheet found on The Spriters Resource, but recoloured and edited slightly.
Jakobthecool867 is not exactly the best M.U.G.E.N character available. It's tiny, so average hight characters have to crouch to hit him, overpowered, missing hitboxes, and goes invisible during his running animation. The reason this character can be classed as overpowered is because its 'Standing Strong Kick' has four attacking frames each dealing 100 damage, and its 'Crouching Medium Kick' deals 80 damage and can hit a maximum of twelve times.