Note: In nearly all cases except those marked with *, the Legionnaire came first.
Legion/X-man or enemy of
Saturn Girl/Professor X (telepathy)
Cosmic boy/Magneto (magnetism)
Lightning Lad/Storm (lightning/weather)
Phantom Girl/Kitty Pride (intangibility)
Triplicate Girl/Multiple Man (split into several people)
Ferro Lad/Colossus (change to metal)
Timber Wolf/Wolverine (agility, strength, claws, fangs, super senses, accelerated healing)
Sun Boy/Sunfire (heat and light generation)
Polar Boy/Iceman (cold generation)
*Dawnstar/Angel (wings allow flight)
*Nemesis Kid/Mimic (copies powers of others)
*Tyroc/Banshee (sonic abilities)
*Blok/Blob (strength, resistance, energy absorption)
And then, there’s even more parallels in the 80’s and 90’s, mostly with Legionnaires copying established X-Men:
*Kono/Harry Leland (body density)
*Veilmist, Flederweb/Nightcrawler (wall adhesion, teleportation)
*Bloodclaw/Wolverine (strength, razor claws)
Possible theories:
- There’s a limited number of superpowers so there’s bound to be overlap.
- Disgruntled former employees became new employees at the other company.
- They willfully plagiarized from each other because the nature of the two universes required coming up with new powers almost monthly.
- I’m seeing something that’s not there.
- Other.