Animal mesoderm forms by enterocoelic pouching, through invagination of the endoderm. The main deuterostome phyla are the Echinodermata and the Chordata. Echinoderms are exclusively marine and include starfish, sea urchins, and sea cucumbers. The chordates are dominated by the vertebrates (animals with backbones), which consist of fishes, amphibians, reptiles, birds, and mammals. The deuterostomes also include the Hemichordata (acorn worms). The Ecdysozoa are protostomes, named after their shared trait of ecdysis, growth by moulting. They include the largest animal phylum, the Arthropoda, which contains insects, spiders, crabs, and their kin. All of these have a body divided into repeating segments, typically
Phyla-Vell agreed to become the new avatar of Oblivion. Now calling herself Martyr, Phyla-Vell is a more abrasive and aggressive figure. When the Guardians attempted to negotiate with the Inhumans to stop the War of Kings, she ruined the attempt by taking Inhuman princess Crystal hostage instead; this led to battle between the Inhumans and Guardians, while she continued to escalate. Eventually, the Inhumans would try to end the war by detonating a weapon that shattered space itself, creating a multiversal Fault. When Adam Warlock stopped the Fault's growth by using a redundant timeline, one where he became the villainous Magus,