The New Teen Titans, Vol. 2 #24

Hell Is the Hybrid
The deranged Mento blames Changeling for the death of the original Doom Patrol and wants him dead. Mento gathers recently deceased people to become his version of the Doom Patrol, called the Hybrid. He creates Gorgon the Terrible, the Horrible Harpi, and Pteradon – who become reluctant soldiers in his cause. Meanwhile, Changeling sees Jillian Jackson, who has dyed her hair blue. Later, Pteradon attacks the T-Jet and causes into to crash into the river.
Release Date: 1986