Machine Mind: The Museum Automaton is immune to poison, radiation and all forms of disease. It does not need to eat or sleep, but enters an inactive state for at least 4 hours a day to conserve power. The Museum Automaton cannot use stimpaks or other items intended for biological creatures.

Historical Glitch, Roleplay Override: When a Museum Automaton is reduced to half its hit points or lower, its programming glitches, triggering a "Roleplay Override."

At the start of each of its turns, the automaton rolls a d8. Based on the result, it adopts a different historical persona and associated combat behavior for that round:

1-2: Animalistic Instincts: The automaton becomes enraged and begins making aggressive animal noises during combat, and walks on hands and knees if already humanoid.
3-4: Berserker Gladiator: The automaton becomes enraged, gaining advantage on attack rolls. All attack rolls against the automaton also have advantage. whilst it is in this Beserker state. It also gains temporary hit points equal to its Constitution modifier.
5-6: Tactical General: The automaton attempts to command allies (if any) or uses cover and strategic movement. It gains a +2 bonus to AC and advantage on Dexterity saving throws.
7: Dramatic Duelist: The automaton focuses on single-target attacks, gaining a +2 bonus to attack rolls against a single target it designates. It also uses theatrical flourishes, imposing disadvantage on attack rolls against it from other creatures.
8: Erratic Storyteller: The automaton's programming becomes completely unstable. It makes a random attack against the nearest creature (friend or foe) and then uses its bonus action to recite a nonsensical historical monologue, which has no direct effect, but is very unsettling.