Basically, several level-based games “back in the day” had a special kind of enemy appearing when playing the same level for too long. Bubble bubble had
Baron von Blubba:
Snow Brothers had a similar one (a weird pumpkin figure spawning invincible ghosts).
Does this kind of enemy have a canonical name? (Like “boss”, but it’s not a boss of course.)
Answer
No, there is no canonical name for them.
However, I somewhat like the term Chase Boss this GiantBomb user has come up with, although it does not strictly limit the term to enemies appearing due to time constraints: http://www.giantbomb.com/baron-von-blubba/3005-10958/forums/the-mentop-tento-ten-best-chase-bosses-504317/
It’s also worth noting that 1980 arcade game Berzerk probably featured the first enemy of this kind, fittingly named Evil Otto.
Attribution
Source : Link , Question Author : peppe , Answer Author : janb
