Excalibur comes from Soul Eater, the anime and manga series about students training to turn weapons into Death Scythes. He is a legendary holy sword who appears as a pale, top-hatted figure and is notorious for talking at length before anyone can use him, a running gag throughout the series. Clips of his introductions spread through anime edits, compilations and soundboards because the joke needs no context: a powerful weapon rendered useless by his own ego. Fans still reuse it to parody long speeches, boastful characters and moments when confidence outruns ability.