Degeneration X is the X-antibody of Degeneration. He is apparently evil and is friends with Sonic Xtreme X despite him being in Darktan's Army.
One day while Degeneration was reforming, He had X-Virus in the cake. He then coughed out Degeneration X. Degeneration X beat him up and flew away to join Nightmare. Nightmare let him join his army and Degeneration X hurt a Chick to show how evil he was. Then he destroyed a building in Flywish Island. President Wish saw him and attacked him but he escaped quickly. He then went to fight DTA. While he was there, he met Sonic Xtreme X. They instantly became close friends and Degeneration X got those X-Virus fangs. He then decided to help Nightmare make X-Antibodies. He also developed a crush on Xellina.
Life in Darktan's Army
What we did not tell you was that Degeneration X started out serving Darktan. He joined Darktan and then betrayed Darktan in a battle with Nightmare. He then joined Nightmare.
He can make X-Creatures. Sometimes he is lucky but usually he isn't.