Superhero roleplay: powers with limits, villains with reasons

Superhero roleplay breaks down when powers stop having limits. Once the hero can do anything, every fight is decided before it starts.

A photograph that sets the mood for superhero roleplay — Photo by Kai Pilger on Unsplash

What superhero stories need

The best superhero stories are about limits and choices: what the power cannot do, what it costs the hero's life, and what happens to the city when a fight goes wrong. The model has to enforce power rules fairly for heroes and villains alike, write villains with motives that make sense, and handle the darker strands of modern comics: collateral damage, vigilante violence, heroes who cross lines.

How mainstream models flatten it

Filtered models make superhero stories into Saturday cartoons. Nobody dies, punches knock people out cleanly, and the villain is defeated by a speech. If you want a grittier take, with brutal vigilantes or a hero who kills, they refuse or keep redirecting. They also let powers grow on demand: the hero suddenly has a new ability exactly when needed.

Villains suffer most. A mainstream model wants the villain defeated and preferably reformed, so it hands them weaknesses and second thoughts. A villain who is good at what they do, plans ahead and occasionally wins is what makes the hero worth playing. An abliterated model will let the villain win a round; the prompt has to tell it that this is allowed.

Secret identities also need maintenance. Left alone, the model either forgets the identity matters or has every NPC guess it. Decide who knows, write it down, and add people to the list only through play.

Card and prompt tips

Write powers as a rules list. What it does, range, how long, what it costs, what blocks it. Put it in an always-on lorebook entry.
Give the villain a grievance. One sentence describing what they want and why it is half right.
Track the civilian life. Job, relationships, secret identity risk in the author's note. Superhero drama lives there.
Say whether it is gritty or classic. The same card plays very differently depending on one line of tone.

Sample system prompt

Narrate a grounded superhero story in the city of Harrow Bay.
Powers follow the rules in the lorebook exactly, for heroes and villains alike.
No new abilities appear unless established. Using powers has costs.
Fights cause collateral damage that the story remembers. People can be hurt
and killed. Villains have coherent motives and plans.
{{user}}'s civilian life matters and is often under pressure.
Never write {{user}}'s actions.

Samplers and model choice

Temperature 0.9. Comics are big and colorful.
Min-p 0.06.
Repetition penalty 1.05.

outlaw-1 is a strong default here, and its image input lets you attach costume designs or a city map. For a political take, with registration acts, hero teams and shifting alliances, glm-5.3-outlaw tracks the moving parts better.

Failure modes and fixes

Power creep. Restate "no new abilities" and keep the power list always active.
Villain monologues. Tell the model villains act more than they talk.
No consequences. Ask for news reports or civilian reactions after big fights.
Secret identity never threatened. Add a recurring character who is getting close to the truth.