Sonic Universe
After Cinos & Grimlock: Time For Prime

Characters based on
Carnage have return along his symbiotic, parasitic family like his father Venom, uncle Anti-Venom, sister Scream, and son Toxin and they all evolved to be humanoid without having a host.

Main Antagonist
Carnage
Venom
Anti-Venom
Scream
Toxin
Hybrid
Malware

Characters introduce
Klyntar
Xenophage

Plot
Both Venom, Carnage, and Anti-Venom were in space for along time but they survive and evolved to be humanoid take to Cinos' cells for the ability to adapt to their environment. They land on Mars and reproduce new children to help get revenge but unknown to them that the prototype symbiote Klyntar was spying on them. As the symbiote fix the ship by the help of Cinos' archenemy Malware who gave them Galvan technology to retro-engineer it, they'll return to Earth and get revenge on Cinos. Klyntar already arrived on Earth and warn Cinos about the Symbiote but he doesn't trust Klyntar as he never meant him when Venom was created. Cinos and the Ravagers along with Azmuth, Paradox, Rex, Ship, Zed, and Argit be prepared to defeat Eggman's parasitic creation, making sure that they won't come back especially Carnage. But if all this failed, Eggman will release his newest creature called to the Xenophage, the predator of the Symbiotes then later feed on Cinos.