Not so sure if Murun Buchstansangur was that creepy, more dark, dower, depressing and disturbing. All done in a very reserved and self-referential British way. Despite the Germanic sounding name, Murun was portrayed very much a quintessentially British kind of downbeat melancholic way. An early animations offering from the then cutting edge and new Channel 4. The animation ran from 1982 until 1988, made up of 52 episodes of 5 minutes each. So Murun was often used as filler between other TV shows on the channel into the 90s.
The show was an oddly oblique and thoughtfully intelligent show, that confused and delighted in equal measure. Think Kafka for kids both big and small, and you are some way to understanding what Murun Buchstansangur was all about.