>>10060009You are LITERALLY genestealers.
>Target a host population>Interbreed with its members and make hybrids that pass as members of said population>Hybrids are raised as your own and are exclusively loyal to your own>Hybrids have an almost hive mind-like level of cooperation>Hybrids also knowingly subvert the host population by deliberately helping each other to key positions of power, and then using those positions to weaken society>Hybrids ultimately perish along with the host population when SHTF due to their subversion 