Flesh Demons
Summoned things of ritual and blood. The Cult calls them; so, in time, can you.
A Flesh Demon is not born. It is called, through blood and a ritual board, by cultists who do not fully understand what answers.
They are distinct and dangerous opponents, not copies of one monster. At half health they enter a second phase and move half again as fast. The Arena throws them at its captives in sequence, and the Cult treats each as an event.
The same summoning tradition is open to a Blood Relief caster. Summon Demon, the Blood ultimate, brings a demon up through the Relief to fight beside you for a time. It never harms the one who called it. What it costs you is another matter.
The demons you meet in the Cult’s hands are not the demons you can command, and that difference is the point.