A Sonic Wave-Neutralizer is a Kryptonian portable device that creates Ultra-High and Ultra-Low Frequencies. It was successfully used by Superman against Siryn's UHF/ULF voice that allows to canceling out her "sonic charm" to manipulate people.

The Neutralizer is always carried by Superman to negate Siryn's UHF/ULF voice from interfering in his response to distress calls. When Siryn enrolled in the Xavier Institute, X-Men and later members of the Justice League are equipped with Neutralizers to ensure from being taken advantage.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.