The director relies on the actor so TECHNICALLY the director, but the actor has to be good otherwise it would bring down the whole film
Actor: John Wayne has 250 Charles Ogle has 255+ movies Christopher Lee has 263 Edgar Kennedy has 500 movies like "Shane" Adoor Bhasi has 557 Slim Summerville has 630 movies like"The Big Trail" Mel Blanc (voice actor) is credited with 1024 on IMDb
Directors. They are pulling the strings on a stage. If something wrong with actors or someone else - directors may delete them (I mean replace of course, but sometimes........)