First, the good news. Black Clover is remarkably efficient compared to its peers. With 170 episodes, the series has a filler percentage of roughly . Compare this to Naruto (which sits near 40%) or Bleach , and Black Clover fans have very little to complain about.
These episodes contain small portions of canon material (usually at the very beginning or end) but are mostly anime-original: The "Anime Canon" Distinction black clover fillers
These are "breather" episodes during the dark elf war. Characters turn into chibi (super-deformed) art styles for comedy skits. First, the good news
While most filler is skippable, Black Clover is unique because Studio Pierrot often used "anime-canon" content to expand on character development and world-building that the manga didn't have time to explore. The Essential Filler List : " Compare this to Naruto (which sits near 40%)
If you want to watch Black Clover purely for the canon story (The Grimoire, Dungeon, Seabed Temple, Elf Reincarnation, Spade Kingdom), follow this simple path:
These episodes are entirely original to the anime. You can skip these without missing any plot progression from the manga.
Don't skip everything . Skip the Devil Banishers. Watch the volcano training. And definitely watch the chibi food war. Your time is valuable, but so is laughing at Gordon’s silent screaming.