Every Filler Episode Of Black Clover For its flaws on the offset as a Pierrot anime, Black Clover had some pretty great filler episodes, especially near the end and if the movie is counted into the fold. All in all, Black Clover's filler episodes have multiple must watches, whether it's returning to Hage in episode #131, and #135 is perfect for anybody who enjoyed the charm of the anime's first "mixer" mini-arc.