I notice a bunch of people are looking for hints in the variant bios for what might trigger the unlock. Since they're not viewable in game until after the unlock is achieved, where are people getting them from?
If they're all available online somewhere, it'd be helpful if Pydro could add that link to his sticky post about unlocking variants.
Time for some scientific action!
https://twitter.com/SeeSome
Will do. Look at the bottom of each character page for the info.
http://sentinelsofthemultiverse.com/multiverse
http://sotm.wikidot.com
Civilized men are more discourteous than savages because they know they can be impolite without having their skulls split, as a general thing.
-Robert E. Howard, "The Tower of the Elephant"
You can also find them on the wiki
EDIT: Ninja'd
"Do you not know that a man is not dead while his name is still spoken?"
- Terry Pratchett, Going Postal