A screenshot of a tweet from @zumo_zd, which reads "I like it when this happens". The attached image is a drawn mock-up of an IMDb-style page of "Popular Voice Actor Man, known for Lord Darkness Edgeman from Blood Dying and Screaming". On his list of roles, this casting is listed, but he is also listed as voicing "Fish" from "Adventures of little fish in bowl". End transcription.
That dude is everywhere. Yes, he became iconic for his Joker voice in Batman: The Animated Series, but my god he's in so much TV. He was hilarious for his brief appearance in "What We Do in the Shadows," and he killed it in Adventure Time. I mean seriously, look at his IMDB page.