All of the Amalgam figures were made by Mark Myers.
Check out Mark's website!
Project Cadmus Three Pack:
Bizarnage - Bizarnage is simply a repainted "Carnage" figure from the Spider-man Maximum Carnage line that was marbleized.
Spider-Boy - Spider-Boy is a repainted "Morph" figure from the X-Men basic figure assortment. His jacket comes from a Gambit from the X-Men Classics line with Sculpey Glaze and paint for the sleeves. The Web Gun is a "Cable" Accessory cut to resemble the Arach-Kid's weapon of choice.
Doc Ock - The not-so-mad scientist is a repainted/reissued Doctor Octopus from the Amazing Spider-man line. The accessories were removed and the figure was repainted. (Does this make it a Threepaint?)