The Martian memory restorer, also known as the MMR[1], is a piece of tech that was created by Cisco Ramon in order to recreate J'onn J'onzz's power of memory restoration.[2]


At some point Cisco Ramon created the ring and gave it to Laurel. Laurel used the ring to help Mia Queen regain her memories of the original multiverse.[2]

Later a hooded figure used their own memory ring to restore John Diggle, Jr.'s memories of being Deathstroke.[2]

When Abra Kadabra began having dreams of a wife and son that he never knew existed, he ran all the test that he could on himself and realized that he was suffering from neuro-temporal displacement. With this knowledge he went to The Flash Museum, found a broken down Martian memory restorer and fixed it, eventually using it on himself and getting his pre-crisis memories back.[1]



Season 8

The Flash

Season 7


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