is the legendary super saiyan 3 in the Dragon Ball Heroes manga? AFAIK, in the Dragon Ball Heroes videogame appears the legendary super saiyan 3. Is this character in the Dragon Ball Heroes manga?
No. The character only appears in the Dragon Ball Raging Blast 2 Game. In the "Dragon Ball Heroes: Victory mission" manga, Broly appears as an antagonist under the command of Genome, however in his Super Saiyan 4 state.