Below are groupings of Arch-Enemies.
What are Arch-Enemies? Arch-Enmies are symbolized by an old style base, where the sides and bottom are one piece and the top of the dial fits into the bottom. However, bases that look like this and are colored black are not Arch-Enemies. Also, the Arch-Enemy must correspond with the same color from the same set. Figure from the same set and same color, with the same name are not considered Arch-Enemies. There are some different rules for quilifying Arch-Enemies: firstly, Arch-Enemies may not be on a same team, also when an Arch-Enemy deals the KOing damage, points rewarded are double the KOd figure's point value.
1 REV Mr. Fantastic from Fantastic Forces was produced without an AE base. Instead, the disk on the bottom side of the figure was colored blue.
2 Unique Hush from Legacy was not produced with an AE base, but has been Errata to be AE with Vet Batman, which would make it have a green AE base.