Justice League (2001)

S3E10 Deadly Invasion

Mysterious, featureless aliens launch an invasion on Earth, targeting an underwater nuclear facility. The alien leader adopts the appearance of Admiral Nelson’s deceased friend to persuade Nelson that their intentions are peaceful. However, Nelson sees through their ruse and assembles a team to confront the aliens head-on at the base, ready to risk their lives to thwart the invasion, regardless of the dangers that await them.