Both Versions of the Visitors, the original visitors from the 1983 mini series, it's sequel V: the final battle, and the 1984 TV series and the Visitors from the 2009 reboot.
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Top 10 Alien Invaders in TV
#2
Suggested by
hulkfan
Dominators - Arrow, The Flash, DC's Legends of Tomorrow, & Supergirl
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hulkfan
7 years ago Report
These aliens are so dangerous that not only did Team Arrow and Team Flash have to team up but they had to summon The Legends of Tomorrow and Supergirl (The latter of which lives in an alternate dimension).
