There were a lot of mysteries on who all the previous weapons were of the Weapon X program. Some are revealed, but some new mysteries were added as well.
As today, in the cap America/ Wolverine one-shot we saw that the animals of Brute Force are now Weapon II. Brute Force is not well known, but that is a team of 5 or 6 different animals with cyborg parts, a lion, bear, eagle, kangaroo and one or two others. Which is quite a reveal.
But that are not the only revelations!!
Weapon IV is Sulfur, aka Man-Thing
Weapon V is Venom and somehow Nick Fury was involved in this as well
Weapon VI is Power-Man, aka Luke Cage
Weapon IX is Psyche. This is very likely to be Weapon IX is Typhoid Mary - the M. Hunt on Blackboard is Mary's psychiatrist from Marvel Comics Presents #150-#151), and the theater masks represents Typhoid Mary's split personalities. Previously it was assumed Weapon IX was Deadpool.
The total overview is now:
Weapon O – Black Captain America (Isaiah Bradley)
Weapon I – Captain America (Steve Rogers)
Weapon II – Brute Force
Weapon III – Skinless-Man
Weapon IV - Man-Thing
Weapon V - Venom
Weapon VI - Power-Man (Luke Cage)
Weapon VII - Nuke.
Weapon VIII several criminals
Weapon IX - Typoid Mary (previous thought to Deadpool)
Weapon X - Wolverine
Weapon XII - Huntsman
Weapon XIII - Fantomex
Weapon XIV - Stepford Cuckoos
Weapon XV - Ultimaton
Weapon XVI - Allgod