According to Vexx, the Appoplexian Empire has been led by 99 supreme commanders, with himself being the 99th. It is mentioned by Vexx that the people of his planet have a sense of shame and always wear clothes.
It is said that some of the Appoplexians have died due to their short temper and always wanting to get into fights.
Ben 10: Maximum Heroes
Appoplexia appears in Ben 10: Maximum Heroes briefly in the beginning of the episode The Ringmaster when Ben, Gwen, and Kevin, finish up a mission on the planet.
Ben 10: The Omniverse Wars
Appoplexia is part of the Dark Region of the Omniverse in Ben 10: The Omniverse Wars.
- According to Derrick J. Wyatt, Appoplexia is savage.