Dad's Fighting Rules: 1. Don't make any step. Concentrate. 2. Don't blink. Watch your enemy's movements. 3. And now. It's your step now. Show your enemy the real fighting spirit. Became a monster. Make your enemy's life like a hell.
Yeah, this moment was the point where Gaster went from a side character, powerful for sure but not insane, to truly being someone to beware of. The term "beware" is used for a person or being you want to AVOID, in almost all cases. And indeed, if Betty had simply avoided him, she may have been able to ensure he did not ever use his full power, as he had much yet to lose. Thus the saying is truly shown true, the man who speaks in hands is certainly worthy of "Beware"
