Cecil's Kill Switch

Item from Invincible by Robert Kirkman

A sonic device designed to incapacitate or kill Viltrumites — Cecil's insurance policy against the gods he works alongside.

Also known as: Kill Switch, Cecil's Kill Switch, Sonic Kill Switch

What They Know

• Emits a targeted high-frequency sonic pulse calibrated to Viltrumite physiology — causes extreme pain and can potentially kill
• Cecil had one implanted in Mark without consent — activated it during a confrontation, permanently damaging their trust
• Represents Cecil's contingency-for-everything approach to Earth's defense

Connections

• created_by — cecil
• used_against — mark

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