The Sequels are astronauts mainly found in the Red Plains. Valor first meets a dead Sequel in a sunken building in the Divided Sea, who gives him advice on how to solve the Sunken City puzzle after being revived with the Transient Heart. Later, Valor meets more Sequels in the Red Plains, all of whom are hostile and fire lasers from the helmet visor. When killed, The Host can revive them, so it is recommended to kill them when they are not above land, causing their body to dissapear.
Happy to be alive in the past sequel: (After reviving with Transient Heart) God carries a heavy burden: “Fearing that we might run aground somewhere on the rocks, they cast six anchors from the stern and wished for daybreak.”
Prior to the Red Plains update there were no enemy Sequels, just one NPC.