He finally made an appearance during the World War III event where he and the other Teen Titans tried to help stop a rampaging Black Adam. The group confronts the murderer at the Greek Parthenon. Zatara is badly injured. Young Frankenstein grabs Black Adam, who then rips off his arms. At that point the Titans leave their wounded to the care of rapidly approaching Greek authorities. Martian Manhunter, disguised as a medical worker, goes into Young Frankenstein's mind and learns that he's still alive and in great pain. In his last moments, J'onn soothes his mind, staying with him until his death.
In the DC Infinite Halloween Special, Victor Zsasz revealed the final fate of Young Frankenstein in a tale called "...In Stitches". As his remains were being carried away in a helicopter, it was struck by lightning. His body was blown to bits, and the individual pieces began moving on their own, killing anyone in their path for new flesh. Young Frankenstein was finally able to pull himself back together in Albania, and is now walking on the bottom of the Ionian Sea with a need for revenge. According to promotional materials for the new Terror Titans series, Young Frankenstein, whose final story is now revealed to be true, and not a fabricated Halloween tale, is stated to be one of the imprisoned heroes forced to fight on the behest of the Apokoliptan gods on Earth in the Dark Side Club. After being rescued from the club by Miss Martian, Young Frankenstein was offered a spot on the new Teen Titans roster, but declined. He also appears in a pin-up drawn for the final issue of Teen Titans.