The types of 'android assassins' are tulpas. They're similar to the Jewish tradition of Golem, which is imbued rock and clay to an automaton. Other terms would

The types of 'android assassins' are tulpas. They're similar to the Jewish tradition of Golem, which is imbued rock and clay to an automaton. Other terms would be thoughtforms, egregores. The belief behind them is that they are 'energy beings' (think of energy as spiritual and not em/strong/weak/gravity). And one can 'encode' simple ideas or actions on them, like "Protect this grave" or the like.