The (like all characters) unnamed bartender is the only female figure in Thomas Ott's silent comic story "The Millionairs" (from the album "Dead End").
She was ordered by the owner of the motel (where she worked at the bar) to poison a guest, whom he had seen with a briefcase full of money. Later on, she electrocuted the motel keeper under the shower so she could have the money on her own. But the customer secured the brief case with a scorpion, and while opening it, the bartender was stung by the creature and crashed the car, resulting in the villainess' death.