some suggestions are, big bang should be used in both of his forms (cause he did use them in the saiyan saga and frieza saga), his gallet gun attack is not gallet gun, thats more like final flash, maybe you could replace gallet gun with final flash. gallet gun is his multiple fireball attack fury thing. like when he was fighting frieza form 4, all those ki ball attacks he did, thats gallet gun. he also should have bakuhatsuha (or body explosion) where he makes an explosion of ki around him.