@@春猫はるニャン I don't know if you understand but gaster is helping papyrus avenge the death of his brother sans but papyrus still has some mercy inside of him even when the human killed his brother and gaster just wants to kill the human but papyrus doesn't
Solo diré gracias youtube por tu autotraduccion, ahora digo Actuar se refiere a realizar una acción otra que no sea atacar o perdonar, ejemplo, hablar, revisar stats, contar un chiste, etcetera