"The Astounding Separated Man"
First appearance of Teen Titans following tryout team-up in Brave and the Bold (Vol 1) #54.
*Now organized as the Teen Titans, Robin, Kid Flash, Aqualad and Wonder Girl respond to a call for help from the teenagers of Midville. The youngsters' "Teen Government for a Day" project is violently disrupted by the reappearance of the Separated Man, a gigantic being able to separate his body parts and the creation of Professor Brian Holmes, father of the young "mayor for a day". Unknown to the citizens of Midville who believe the creature to be a transformed Professor Holmes as was the case when the Separated Man previously appeared, the revived menace is actually Jake Trask, the professor's former prison cellmate who has stolen the scientist's molecular formula and used it on himself. With the aid of the professor and the Midville teenagers, the Teen Titans are able to subdue the Separated Man long enough to administer an antidote which restores him to normal. *Source Official Teen Titans Index #1 - Published by ICG