If Star Trek taught me anything, it's that most aliens look like humans, except for some bumps on their forehead. Hodgkin's Law of Parallel Planetary Development.
Star Trek TNG kind of lampshaded that in "The Chase", where its is revealed that alien species are similar and biologically compatible because they share a common humanoid ancestor.
ASalazarMX|4 years ago
https://memory-alpha.fandom.com/wiki/The_Chase_(episode)
sydthrowaway|4 years ago