1
Red Skull
2
Super-Adaptoid
3
Viper
4
Baron Helmut Zemo
5
Hive
6
Sin
7
Captain Hydra
8
M.O.D.O.K.
9
Arnim Zola
10
Serpent Society
11
Batroc the Leaper
12
Baron Blood
13
Jack O' Lantern (Steven Levins)
14
King Cobra
15
Nuke
16
Machinesmith
17
William Burnside
18
Baron Heinrich Zemo
19
A.I.M.
20
Black Mamba
21
Armadillo
22
Flag-Smasher
23
Death Adder
24
Hydra
25
Crossbones
26
Porcupine
27
Princess Python
28
Eel
29
Cottonmouth
30
Constrictor
31
Sidewinder
32
Coachwhip
33
Rattler
34
Baron Strucker
35
Blue Streak
36
Puff Adder
37
Vermin
38
Golden Claw
39
Cutthroat
40
Power Broker
41
Asp
42
Bushmaster
43
Anaconda
44
Dr Faustus
45
Slug
46
Moonstone (Lloyd Bloch)
47
Scourge of the Underworld
48
Nightshade
49
U.L.T.I.M.A.T.U.M.
50
Superia
51
Zaran the Weapons Master
52
Commision on Superhuman Activities
53
Secret Empire
54
Hate-Monger