Dragonair had in a cover his ears, about Grumble Bee's Supersonic Buzzing - to friend love interest say 'Are You Okay Billy'
Blue Ranger cover her ears - about his ultrasound waves of Grumble Bee - Zyu2 ep 06 version

Grumble Bee's Ultrasonic Tones (effect as Dragonair and Billy)

Grumble Bee's vibrating wings could send yellow pulses of energy through the air, and his buzzing afterward was extremely irritating to the Rangers' ears through their helmets.

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